Finding the Fourth Proportional to 54,654.50, 81,981.76 and 42,192.71

Step by Step Solution

1. Step 1: Write the proportion equation
   54,654.50 : 81,981.76 = 42,192.71 : x
2. Step 2: Convert to fraction form
   54,654.50/81,981.76 = 42,192.71/x
3. Step 3: Cross multiply
   54,654.50x = 81,981.76 × 42,192.71
4. Step 4: Simplify right side
   54,654.50x = 3,459,032,724.44
5. Step 5: Solve for x
   x = 3,459,032,724.44/54,654.50
6. Step 6: Final answer
   x = 63,289.08