Finding the Fourth Proportional to 97.50, 146.27 and 72.15

Step by Step Solution

1. Step 1: Write the proportion equation
   97.50 : 146.27 = 72.15 : x
2. Step 2: Convert to fraction form
   97.50/146.27 = 72.15/x
3. Step 3: Cross multiply
   97.50x = 146.27 × 72.15
4. Step 4: Simplify right side
   97.50x = 10,553.38
5. Step 5: Solve for x
   x = 10,553.38/97.50
6. Step 6: Final answer
   x = 108.24