Finding the Fourth Proportional to 139,787.17, 192,911.32 and 82,400.29

Step by Step Solution

1. Step 1: Write the proportion equation
   139,787.17 : 192,911.32 = 82,400.29 : x
2. Step 2: Convert to fraction form
   139,787.17/192,911.32 = 82,400.29/x
3. Step 3: Cross multiply
   139,787.17x = 192,911.32 × 82,400.29
4. Step 4: Simplify right side
   139,787.17x = 15,895,948,333.00
5. Step 5: Solve for x
   x = 15,895,948,333.00/139,787.17
6. Step 6: Final answer
   x = 113,715.36