Finding the Fourth Proportional to 102,463.50, 141,400.71 and 57,751.50

Step by Step Solution

1. Step 1: Write the proportion equation
   102,463.50 : 141,400.71 = 57,751.50 : x
2. Step 2: Convert to fraction form
   102,463.50/141,400.71 = 57,751.50/x
3. Step 3: Cross multiply
   102,463.50x = 141,400.71 × 57,751.50
4. Step 4: Simplify right side
   102,463.50x = 8,166,103,103.57
5. Step 5: Solve for x
   x = 8,166,103,103.57/102,463.50
6. Step 6: Final answer
   x = 79,697.68