To solve the expression \( 72 \div 4 \div (-6) \), we can perform the division step by step.
First, divide 72 by 4:
\[ 72 \div 4 = 18 \]
Now, take the result and divide it by -6:
\[ 18 \div (-6) = -3 \]
Therefore, the quotient of \( 72 \div 4 \div (-6) \) is \(-3\).