Finding the Fourth Proportional to 456,613.16, 685,155.98 and 331,287.82

Step by Step Solution

1. Step 1: Write the proportion equation
   456,613.16 : 685,155.98 = 331,287.82 : x
2. Step 2: Convert to fraction form
   456,613.16/685,155.98 = 331,287.82/x
3. Step 3: Cross multiply
   456,613.16x = 685,155.98 × 331,287.82
4. Step 4: Simplify right side
   456,613.16x = 226,983,830,089.49
5. Step 5: Solve for x
   x = 226,983,830,089.49/456,613.16
6. Step 6: Final answer
   x = 497,103.13