Hard to say. The last formation was one of the hardest there was. It will be difficult for several reasons.
First off the CDA probably will not be so inclined to ruling with the PVV again (although they're also quite unwilling with ruling with the PvdA), and apart from the CDA and VVD there aren't that many parties wanting to rule with the PVV. Another issue is that the VVD will probably not be that much inclined to wanting to rule with the SP.
The problem is that those to parties on the extreme flanks account for about a third of the seats with about 25 seats each.
Then there are the two biggest parties, the VVD and the PvdA which can both count on about 30 seats each.
The rest of the parties will probably have less than 15 seats (or there abouts).
There are 150 seats in parliament, so 76 seats is the slimmest majority.
(the current government, including the PVV-support had 76 seats, now 75 seats because one person left the PVV)
Which means that probably a three-party majority is out of the question or on a very slim majority and there'll probably need to be a fourth party.
Ok, let me turn my naive-o-meter to the max! Let's suppose the above turns out to be the result of the actual election.The polls currently show:
VVD (liberal, right wing, focussed on economy) 33
SP (socialist, populist) 30
PvdA (social democratic) 24
PVV (Wilders, populist, conservative) 19
D66 (progressive, liberal, slightly leftwing) 15
CDA (christian democrats) 11
GroenLinks (green party) 5
So at least 3 parties are needed.
PvdA will never cooperate with PVV
D66 will probably not cooperate with PVV either
VVD and SP are very unlikely to cooperate
PVV has alienated the VVD and CDA in this move, so they're unlikely to cooperate
I somewhat get, why PvdA, VVD and CDA cannot work all three together all that well.
But i don't get why not two of them can govern with the help of two smaller parties.
Say... VVD + PvdA + D66 - that's 72 seats. Add either Greens or CU and it's a government.

In my naive view i can see how all 4 parties could make a case there that they are pushing forward some of their key values or objectives in such a government.
You are now going to tell me why that couldn't work as easy i think, right?
