Finding the Fourth Proportional to 78,830.73, 108,757.90 and 60,687

Step by Step Solution

1. Step 1: Write the proportion equation
   78,830.73 : 108,757.90 = 60,687 : x
2. Step 2: Convert to fraction form
   78,830.73/108,757.90 = 60,687/x
3. Step 3: Cross multiply
   78,830.73x = 108,757.90 × 60,687
4. Step 4: Simplify right side
   78,830.73x = 6,600,190,677.30
5. Step 5: Solve for x
   x = 6,600,190,677.30/78,830.73
6. Step 6: Final answer
   x = 83,726.11