In order to calculate how many inches would be 4.2 meters, we can use a rule of three:
[tex]\begin{gathered} 1\text{ meter}\to39.37\text{ inches} \\ 4.2\text{ meters}\to x\text{ inches} \\ \\ \frac{1}{4.2}=\frac{39.37}{x} \\ x=39.37\cdot4.2 \\ x=165.354 \end{gathered}[/tex]So we have that 4.2 meters would be approximately 165.354 inches.