Finding the Fourth Proportional to 102,046.89, 140,826.39 and 56,108.47

Step by Step Solution

1. Step 1: Write the proportion equation
   102,046.89 : 140,826.39 = 56,108.47 : x
2. Step 2: Convert to fraction form
   102,046.89/140,826.39 = 56,108.47/x
3. Step 3: Cross multiply
   102,046.89x = 140,826.39 × 56,108.47
4. Step 4: Simplify right side
   102,046.89x = 7,901,553,278.52
5. Step 5: Solve for x
   x = 7,901,553,278.52/102,046.89
6. Step 6: Final answer
   x = 77,430.61