Finding the Fourth Proportional to 89,789.99, 123,915.42 and 49,512.33

Step by Step Solution

1. Step 1: Write the proportion equation
   89,789.99 : 123,915.42 = 49,512.33 : x
2. Step 2: Convert to fraction form
   89,789.99/123,915.42 = 49,512.33/x
3. Step 3: Cross multiply
   89,789.99x = 123,915.42 × 49,512.33
4. Step 4: Simplify right side
   89,789.99x = 6,135,341,167.13
5. Step 5: Solve for x
   x = 6,135,341,167.13/89,789.99
6. Step 6: Final answer
   x = 68,329.91