Finding the Fourth Proportional to 639,278.16, 882,535.52 and 467,002.72

Step by Step Solution

1. Step 1: Write the proportion equation
   639,278.16 : 882,535.52 = 467,002.72 : x
2. Step 2: Convert to fraction form
   639,278.16/882,535.52 = 467,002.72/x
3. Step 3: Cross multiply
   639,278.16x = 882,535.52 × 467,002.72
4. Step 4: Simplify right side
   639,278.16x = 412,146,488,336.61
5. Step 5: Solve for x
   x = 412,146,488,336.61/639,278.16
6. Step 6: Final answer
   x = 644,706.04