Step 1 :Consider the function \(y=3\log_4(x-2)\).
Step 2 :The vertical asymptote of a logarithmic function is the x-value that makes the argument of the logarithm equal to zero.
Step 3 :So, set \(x-2=0\) and solve for \(x\).
Step 4 :The solution is \(x=2\).
Step 5 :Therefore, the vertical asymptote of the function \(y = 3\log_4(x-2)\) is \(\boxed{x = 2}\).