Finding the Fourth Proportional to 102,498.59, 141,448.83 and 57,179.54

Step by Step Solution

1. Step 1: Write the proportion equation
   102,498.59 : 141,448.83 = 57,179.54 : x
2. Step 2: Convert to fraction form
   102,498.59/141,448.83 = 57,179.54/x
3. Step 3: Cross multiply
   102,498.59x = 141,448.83 × 57,179.54
4. Step 4: Simplify right side
   102,498.59x = 8,087,979,032.94
5. Step 5: Solve for x
   x = 8,087,979,032.94/102,498.59
6. Step 6: Final answer
   x = 78,908.20