Finding the Fourth Proportional to 102,463.58, 141,399.06 and 57,142.10

Step by Step Solution

1. Step 1: Write the proportion equation
   102,463.58 : 141,399.06 = 57,142.10 : x
2. Step 2: Convert to fraction form
   102,463.58/141,399.06 = 57,142.10/x
3. Step 3: Cross multiply
   102,463.58x = 141,399.06 × 57,142.10
4. Step 4: Simplify right side
   102,463.58x = 8,079,839,226.43
5. Step 5: Solve for x
   x = 8,079,839,226.43/102,463.58
6. Step 6: Final answer
   x = 78,855.72