I'm not getting the question.
There are 4 variables in 1 equation, and you want to find the values of 3 of them? There would be infinite solutions.
So I'm assuming you want to rewrite the equation in the form x = ... y = ... and z = ... ?
First, we can simplify the equation
Now can you use the rules of logarithms to rewrite them in the form x=... and so on?
Or are you asking for something else?