Finding the Fourth Proportional to 647,080.52, 970,323.32 and 220,442.72

Step by Step Solution

1. Step 1: Write the proportion equation
   647,080.52 : 970,323.32 = 220,442.72 : x
2. Step 2: Convert to fraction form
   647,080.52/970,323.32 = 220,442.72/x
3. Step 3: Cross multiply
   647,080.52x = 970,323.32 × 220,442.72
4. Step 4: Simplify right side
   647,080.52x = 213,900,707,639.72
5. Step 5: Solve for x
   x = 213,900,707,639.72/647,080.52
6. Step 6: Final answer
   x = 330,562.74