[Randy_Refeld]

Player 3 can do whatever he wants, player 4's raise opened that action to the field. Player 2 did not raise so player 4 can only call when the action comes back to him (assuming player 3 only calls).

edit to add: Most places to raise player 3 must make it at least $140 to go. Some places he must mamke it $200 to go. The first rule is the more common rule, but the second rule is what some old timers told em is better and after hearing their reasoning, I am inclined to agree.