Finding the Fourth Proportional to 139,287.52, 192,375.04 and 93,887.20

Step by Step Solution

1. Step 1: Write the proportion equation
   139,287.52 : 192,375.04 = 93,887.20 : x
2. Step 2: Convert to fraction form
   139,287.52/192,375.04 = 93,887.20/x
3. Step 3: Cross multiply
   139,287.52x = 192,375.04 × 93,887.20
4. Step 4: Simplify right side
   139,287.52x = 18,061,553,855.49
5. Step 5: Solve for x
   x = 18,061,553,855.49/139,287.52
6. Step 6: Final answer
   x = 129,671.01