Finding the Fourth Proportional to 102,085.04, 140,877.50 and 56,762.57

Step by Step Solution

1. Step 1: Write the proportion equation
   102,085.04 : 140,877.50 = 56,762.57 : x
2. Step 2: Convert to fraction form
   102,085.04/140,877.50 = 56,762.57/x
3. Step 3: Cross multiply
   102,085.04x = 140,877.50 × 56,762.57
4. Step 4: Simplify right side
   102,085.04x = 7,996,569,023.56
5. Step 5: Solve for x
   x = 7,996,569,023.56/102,085.04
6. Step 6: Final answer
   x = 78,332.43