Answer
$3\log_3x+\frac{1}{4}\log_3y-4\log_3z=\log_3\frac{x^3\sqrt[4] y}{z^4}$
Work Step by Step
$3\log_3x+\frac{1}{4}\log_3y-4\log_3z=\log_3x^3+\log_3y^{\frac{1}{4}}-\log_3z^4=\log_3\frac{x^3y^{\frac{1}{4}}}{z^4}=\log_3\frac{x^3\sqrt[4] y}{z^4}$