Finding the Fourth Proportional to 137,411.79, 206,084.50 and 57,406.52

Step by Step Solution

1. Step 1: Write the proportion equation
   137,411.79 : 206,084.50 = 57,406.52 : x
2. Step 2: Convert to fraction form
   137,411.79/206,084.50 = 57,406.52/x
3. Step 3: Cross multiply
   137,411.79x = 206,084.50 × 57,406.52
4. Step 4: Simplify right side
   137,411.79x = 11,830,594,665.55
5. Step 5: Solve for x
   x = 11,830,594,665.55/137,411.79
6. Step 6: Final answer
   x = 86,095.92