I have found three of the four and need help on the fourth if anyone can give me an idea

the first is were you find a spray can(one of the corners) get enough speed and transfer to th 3rd ramp. 2: there are 2 ramps and in the middle there is a spray can(not this one) look back and there is another ramp, take this and you will land on anothere one, careful, its kind of a blind one and remember that there is a 100 mone icon in the middle 3rd: go to the place were the first bum is do the skinny transfer gap, that will do 4th: go to the 2nd bum, ollie over that ramp, then you'll see anothr ramp, there is a ledge next to it, use that ramp and while u are landing you will knowetes the one you have to land on, its kinda hard since its a blind landing hope that helps:D