Finding the Fourth Proportional to 72,545.53, 108,781.25 and 42,618.22

Step by Step Solution

1. Step 1: Write the proportion equation
   72,545.53 : 108,781.25 = 42,618.22 : x
2. Step 2: Convert to fraction form
   72,545.53/108,781.25 = 42,618.22/x
3. Step 3: Cross multiply
   72,545.53x = 108,781.25 × 42,618.22
4. Step 4: Simplify right side
   72,545.53x = 4,636,062,487.38
5. Step 5: Solve for x
   x = 4,636,062,487.38/72,545.53
6. Step 6: Final answer
   x = 63,905.56