Finding the Fourth Proportional to 102,488.52, 141,434.12 and 57,776.52

Step by Step Solution

1. Step 1: Write the proportion equation
   102,488.52 : 141,434.12 = 57,776.52 : x
2. Step 2: Convert to fraction form
   102,488.52/141,434.12 = 57,776.52/x
3. Step 3: Cross multiply
   102,488.52x = 141,434.12 × 57,776.52
4. Step 4: Simplify right side
   102,488.52x = 8,171,571,262.86
5. Step 5: Solve for x
   x = 8,171,571,262.86/102,488.52
6. Step 6: Final answer
   x = 79,731.58