Finding the Fourth Proportional to 137,139.72, 205,635.61 and 62,218.98

Step by Step Solution

1. Step 1: Write the proportion equation
   137,139.72 : 205,635.61 = 62,218.98 : x
2. Step 2: Convert to fraction form
   137,139.72/205,635.61 = 62,218.98/x
3. Step 3: Cross multiply
   137,139.72x = 205,635.61 × 62,218.98
4. Step 4: Simplify right side
   137,139.72x = 12,794,437,633.67
5. Step 5: Solve for x
   x = 12,794,437,633.67/137,139.72
6. Step 6: Final answer
   x = 93,294.91