Finding the Fourth Proportional to 89,799.50, 123,934.56 and 51,571.04

Step by Step Solution

1. Step 1: Write the proportion equation
   89,799.50 : 123,934.56 = 51,571.04 : x
2. Step 2: Convert to fraction form
   89,799.50/123,934.56 = 51,571.04/x
3. Step 3: Cross multiply
   89,799.50x = 123,934.56 × 51,571.04
4. Step 4: Simplify right side
   89,799.50x = 6,391,434,151.14
5. Step 5: Solve for x
   x = 6,391,434,151.14/89,799.50
6. Step 6: Final answer
   x = 71,174.50