Finding the Fourth Proportional to 90,441.27, 124,665.15 and 71,289.99

Step by Step Solution

1. Step 1: Write the proportion equation
   90,441.27 : 124,665.15 = 71,289.99 : x
2. Step 2: Convert to fraction form
   90,441.27/124,665.15 = 71,289.99/x
3. Step 3: Cross multiply
   90,441.27x = 124,665.15 × 71,289.99
4. Step 4: Simplify right side
   90,441.27x = 8,887,377,296.85
5. Step 5: Solve for x
   x = 8,887,377,296.85/90,441.27
6. Step 6: Final answer
   x = 98,266.83