Finding the Fourth Proportional to 89,658.72, 123,687.50 and 57,837.87

Step by Step Solution

1. Step 1: Write the proportion equation
   89,658.72 : 123,687.50 = 57,837.87 : x
2. Step 2: Convert to fraction form
   89,658.72/123,687.50 = 57,837.87/x
3. Step 3: Cross multiply
   89,658.72x = 123,687.50 × 57,837.87
4. Step 4: Simplify right side
   89,658.72x = 7,153,821,256.44
5. Step 5: Solve for x
   x = 7,153,821,256.44/89,658.72
6. Step 6: Final answer
   x = 79,789.46