Finding the Fourth Proportional to 89,535.98, 123,537.30 and 57,666.53

Step by Step Solution

1. Step 1: Write the proportion equation
   89,535.98 : 123,537.30 = 57,666.53 : x
2. Step 2: Convert to fraction form
   89,535.98/123,537.30 = 57,666.53/x
3. Step 3: Cross multiply
   89,535.98x = 123,537.30 × 57,666.53
4. Step 4: Simplify right side
   89,535.98x = 7,123,967,416.57
5. Step 5: Solve for x
   x = 7,123,967,416.57/89,535.98
6. Step 6: Final answer
   x = 79,565.42