Finding the Fourth Proportional to 787,049.72, 1,086,123.60 and 447,518

Step by Step Solution

1. Step 1: Write the proportion equation
   787,049.72 : 1,086,123.60 = 447,518 : x
2. Step 2: Convert to fraction form
   787,049.72/1,086,123.60 = 447,518/x
3. Step 3: Cross multiply
   787,049.72x = 1,086,123.60 × 447,518
4. Step 4: Simplify right side
   787,049.72x = 486,059,861,224.80
5. Step 5: Solve for x
   x = 486,059,861,224.80/787,049.72
6. Step 6: Final answer
   x = 617,571.99