Finding the Fourth Proportional to 89,658.09, 123,686.59 and 57,837.24

Step by Step Solution

1. Step 1: Write the proportion equation
   89,658.09 : 123,686.59 = 57,837.24 : x
2. Step 2: Convert to fraction form
   89,658.09/123,686.59 = 57,837.24/x
3. Step 3: Cross multiply
   89,658.09x = 123,686.59 × 57,837.24
4. Step 4: Simplify right side
   89,658.09x = 7,153,690,990.61
5. Step 5: Solve for x
   x = 7,153,690,990.61/89,658.09
6. Step 6: Final answer
   x = 79,788.57