Finding the Fourth Proportional to 447,333.50, 617,337.30 and 256,383.83

Step by Step Solution

1. Step 1: Write the proportion equation
   447,333.50 : 617,337.30 = 256,383.83 : x
2. Step 2: Convert to fraction form
   447,333.50/617,337.30 = 256,383.83/x
3. Step 3: Cross multiply
   447,333.50x = 617,337.30 × 256,383.83
4. Step 4: Simplify right side
   447,333.50x = 158,275,301,375.86
5. Step 5: Solve for x
   x = 158,275,301,375.86/447,333.50
6. Step 6: Final answer
   x = 353,819.47