Easy fold, pick a better spot. You don't want to stack off with 4 other people who are obviously going to call you down. Assuming no one has a made straight, you're obviously only drawing to one King, and that's if no one has T7 or 75. My guess is that it will take running Kings, or running K{8,9,6} for you to win this pot, and it's entirely possible that you could lose it to quads even if you do hit runner runner to fill up. Odds Schmods your hand (in this particular situation) basically can't improve and the chances you are ahead here, unless 2 of these players have down's syndrome and the 3rd one escaped from the zoo, are just about as low as you can get this is a very easy fold.

Addendum*:
I'd like to dub this situation "The Keno Call", because just like Keno, by making this call you're taking, at best, -25% equity.

*This was a joke, not a mathematical solution to the function of his calling equity here .