Finding the Fourth Proportional to 89,315.12, 123,229.62 and 57,502.44

Step by Step Solution

1. Step 1: Write the proportion equation
   89,315.12 : 123,229.62 = 57,502.44 : x
2. Step 2: Convert to fraction form
   89,315.12/123,229.62 = 57,502.44/x
3. Step 3: Cross multiply
   89,315.12x = 123,229.62 × 57,502.44
4. Step 4: Simplify right side
   89,315.12x = 7,086,003,830.27
5. Step 5: Solve for x
   x = 7,086,003,830.27/89,315.12
6. Step 6: Final answer
   x = 79,337.11