Finding the Fourth Proportional to 102,454.99, 141,388.34 and 57,132.83

Step by Step Solution

1. Step 1: Write the proportion equation
   102,454.99 : 141,388.34 = 57,132.83 : x
2. Step 2: Convert to fraction form
   102,454.99/141,388.34 = 57,132.83/x
3. Step 3: Cross multiply
   102,454.99x = 141,388.34 × 57,132.83
4. Step 4: Simplify right side
   102,454.99x = 8,077,916,061.01
5. Step 5: Solve for x
   x = 8,077,916,061.01/102,454.99
6. Step 6: Final answer
   x = 78,843.56