Finding the Fourth Proportional to 102,468.98, 141,407.98 and 57,149.89

Step by Step Solution

1. Step 1: Write the proportion equation
   102,468.98 : 141,407.98 = 57,149.89 : x
2. Step 2: Convert to fraction form
   102,468.98/141,407.98 = 57,149.89/x
3. Step 3: Cross multiply
   102,468.98x = 141,407.98 × 57,149.89
4. Step 4: Simplify right side
   102,468.98x = 8,081,450,005.73
5. Step 5: Solve for x
   x = 8,081,450,005.73/102,468.98
6. Step 6: Final answer
   x = 78,867.28