Finding the Fourth Proportional to 123,057.43, 169,819.25 and 66,468.80

Step by Step Solution

1. Step 1: Write the proportion equation
   123,057.43 : 169,819.25 = 66,468.80 : x
2. Step 2: Convert to fraction form
   123,057.43/169,819.25 = 66,468.80/x
3. Step 3: Cross multiply
   123,057.43x = 169,819.25 × 66,468.80
4. Step 4: Simplify right side
   123,057.43x = 11,287,681,856.60
5. Step 5: Solve for x
   x = 11,287,681,856.60/123,057.43
6. Step 6: Final answer
   x = 91,726.94