Working with the numbers 29%, 19%, 12%, and 12% as the chances you will get into 4 different schools, then the chance you will not get into any of them is

(100% - 29%) * (100% - 19%) * (100% - 12%) * (100% - 12%) =

44.5%

With some major assumptions that I will not go into, the rough estimate that you will get into at least one of the four schools is 55.5%.

I hope this helps.