Is it possible to find out whose hacking your facebook account?

[Andrew]

Yes however it is very tedious and requires intense security checks. You're better off just letting it go and changing your password on everything, because you probably don't have the skills necessary to do something like this. To find out who it is you are also going to have to do some illegal hacking which you don't seem to be knowledgable of. Good luck, and don't give your password away!