Finding the Fourth Proportional to 584,003.30, 875,400.15 and 317,200.10

Step by Step Solution

1. Step 1: Write the proportion equation
   584,003.30 : 875,400.15 = 317,200.10 : x
2. Step 2: Convert to fraction form
   584,003.30/875,400.15 = 317,200.10/x
3. Step 3: Cross multiply
   584,003.30x = 875,400.15 × 317,200.10
4. Step 4: Simplify right side
   584,003.30x = 277,677,015,120.02
5. Step 5: Solve for x
   x = 277,677,015,120.02/584,003.30
6. Step 6: Final answer
   x = 475,471.65