Finding the Fourth Proportional to 89,668.50, 123,754.41 and 57,929.73

Step by Step Solution

1. Step 1: Write the proportion equation
   89,668.50 : 123,754.41 = 57,929.73 : x
2. Step 2: Convert to fraction form
   89,668.50/123,754.41 = 57,929.73/x
3. Step 3: Cross multiply
   89,668.50x = 123,754.41 × 57,929.73
4. Step 4: Simplify right side
   89,668.50x = 7,169,059,557.61
5. Step 5: Solve for x
   x = 7,169,059,557.61/89,668.50
6. Step 6: Final answer
   x = 79,950.70