Finding the Fourth Proportional to 72.93, 100.61 and 52.17

Step by Step Solution

1. Step 1: Write the proportion equation
   72.93 : 100.61 = 52.17 : x
2. Step 2: Convert to fraction form
   72.93/100.61 = 52.17/x
3. Step 3: Cross multiply
   72.93x = 100.61 × 52.17
4. Step 4: Simplify right side
   72.93x = 5,248.38
5. Step 5: Solve for x
   x = 5,248.38/72.93
6. Step 6: Final answer
   x = 71.96