Finding the Fourth Proportional to 859,142.30, 1,185,071.72 and 527,853.12

Step by Step Solution

1. Step 1: Write the proportion equation
   859,142.30 : 1,185,071.72 = 527,853.12 : x
2. Step 2: Convert to fraction form
   859,142.30/1,185,071.72 = 527,853.12/x
3. Step 3: Cross multiply
   859,142.30x = 1,185,071.72 × 527,853.12
4. Step 4: Simplify right side
   859,142.30x = 625,543,804,825.77
5. Step 5: Solve for x
   x = 625,543,804,825.77/859,142.30
6. Step 6: Final answer
   x = 728,102.67