Finding the Fourth Proportional to 475,839.10, 656,313.69 and 404,105.50

Step by Step Solution

1. Step 1: Write the proportion equation
   475,839.10 : 656,313.69 = 404,105.50 : x
2. Step 2: Convert to fraction form
   475,839.10/656,313.69 = 404,105.50/x
3. Step 3: Cross multiply
   475,839.10x = 656,313.69 × 404,105.50
4. Step 4: Simplify right side
   475,839.10x = 265,219,971,854.30
5. Step 5: Solve for x
   x = 265,219,971,854.30/475,839.10
6. Step 6: Final answer
   x = 557,373.22