Finding the Fourth Proportional to 103,401.91, 142,691.52 and 57,461.39

Step by Step Solution

1. Step 1: Write the proportion equation
   103,401.91 : 142,691.52 = 57,461.39 : x
2. Step 2: Convert to fraction form
   103,401.91/142,691.52 = 57,461.39/x
3. Step 3: Cross multiply
   103,401.91x = 142,691.52 × 57,461.39
4. Step 4: Simplify right side
   103,401.91x = 8,199,253,437.14
5. Step 5: Solve for x
   x = 8,199,253,437.14/103,401.91
6. Step 6: Final answer
   x = 79,294.99