Finding the Fourth Proportional to 859,103.81, 1,185,493.89 and 496,551.15

Step by Step Solution

1. Step 1: Write the proportion equation
   859,103.81 : 1,185,493.89 = 496,551.15 : x
2. Step 2: Convert to fraction form
   859,103.81/1,185,493.89 = 496,551.15/x
3. Step 3: Cross multiply
   859,103.81x = 1,185,493.89 × 496,551.15
4. Step 4: Simplify right side
   859,103.81x = 588,658,354,397.47
5. Step 5: Solve for x
   x = 588,658,354,397.47/859,103.81
6. Step 6: Final answer
   x = 685,200.49