How do I solve and what would the answer be?

Given the functions:
g(x) = 27x^(1/2); f(x)= 4x^(2/3)
(g o f)(x) = 27[4x ^(2/3)]^(1/2)
=
[tex]27\times4^{\frac{1}{2}}\times x^{\frac{1}{3}}=[/tex][tex]27\times2^{}\times x^{\frac{1}{3}}=[/tex][tex]54^{}\times x^{\frac{1}{3}}[/tex]