I was reading this hand and my first thought was, "Hrm, I'm not sure if I'd call a 5x raise with KJs" and then you re-raised it and then called a HUGE 58.5x 4bet?! The flop call is fine as you have 8 outs plus a backdoor flush is worth another out. However, I think it's a mistake to let the pot bloat up with such a marginal hand unless you have a good read that both your opponents are playing trash here most of the time. This hand went wrong pre-flop - fold or maybe just call the FIRST raise with KJs. Definitely fold a 4th bet. The only hand you should be playing a 58.5x 4bet is AA or maybe KK and that's worth a shove at that point.