It can be done, but very messy. If the question asked for 29, 61 and 125 hosts it would be fine, but to supply 32, 64 and 128 HOSTS means you would have to split the hosts onto more than one local logical network in order to support network, broadcast and gateway addresses for each network.......IF you are to stay within the single class C range given.
i.e. 25 bit network for most (125) of the router 3 hosts, 26 bit (61) for the router 2 network, 27 bit (29) for the router 4 network, at least 4 x 30 bit networks for the links between routers + some messy little secondary networks to make up the numbers on the routers 2,3 and 4.
As long as the routing protocol supports VLSM, with this limited information, it does not matter what the routing protocol is.
What is the origin of the question and is there any more information ?
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