Finding the Fourth Proportional to 103,114.98, 142,304.28 and 57,807.57

Step by Step Solution

1. Step 1: Write the proportion equation
   103,114.98 : 142,304.28 = 57,807.57 : x
2. Step 2: Convert to fraction form
   103,114.98/142,304.28 = 57,807.57/x
3. Step 3: Cross multiply
   103,114.98x = 142,304.28 × 57,807.57
4. Step 4: Simplify right side
   103,114.98x = 8,226,264,627.40
5. Step 5: Solve for x
   x = 8,226,264,627.40/103,114.98
6. Step 6: Final answer
   x = 79,777.59