Finding the Fourth Proportional to 89,766.09, 123,862.50 and 57,529.31

Step by Step Solution

1. Step 1: Write the proportion equation
   89,766.09 : 123,862.50 = 57,529.31 : x
2. Step 2: Convert to fraction form
   89,766.09/123,862.50 = 57,529.31/x
3. Step 3: Cross multiply
   89,766.09x = 123,862.50 × 57,529.31
4. Step 4: Simplify right side
   89,766.09x = 7,125,723,540.56
5. Step 5: Solve for x
   x = 7,125,723,540.56/89,766.09
6. Step 6: Final answer
   x = 79,381.02