Finding the Fourth Proportional to 404,073.96, 557,861.28 and 359,238.12

Step by Step Solution

1. Step 1: Write the proportion equation
   404,073.96 : 557,861.28 = 359,238.12 : x
2. Step 2: Convert to fraction form
   404,073.96/557,861.28 = 359,238.12/x
3. Step 3: Cross multiply
   404,073.96x = 557,861.28 × 359,238.12
4. Step 4: Simplify right side
   404,073.96x = 200,405,037,447.99
5. Step 5: Solve for x
   x = 200,405,037,447.99/404,073.96
6. Step 6: Final answer
   x = 495,961.28