Step 1: Recall the formula for Celsius to Fahrenheit conversion.
The conversion formula is given by:
\[
\mathrm{F} = \left( \frac{9}{5} \times \mathrm{C} \right) + 32.
\]
Step 2: Substitute the given value of \( \mathrm{C} = 72 \).
\[
\mathrm{F} = \left( \frac{9}{5} \times 72 \right) + 32.
\]
Step 3: Perform the calculation.
First, calculate \( \frac{9}{5} \times 72 \):
\[
\frac{9}{5} \times 72 = 129.6.
\]
Add 32 to this result:
\[
\mathrm{F} = 129.6 + 32 = 161.6.
\]
Thus, \( 72^\circ \mathrm{C} = 161.6^\circ \mathrm{F} \).