Finding the Fourth Proportional to 461,338.72, 636,647.52 and 260,134.72

Step by Step Solution

1. Step 1: Write the proportion equation
   461,338.72 : 636,647.52 = 260,134.72 : x
2. Step 2: Convert to fraction form
   461,338.72/636,647.52 = 260,134.72/x
3. Step 3: Cross multiply
   461,338.72x = 636,647.52 × 260,134.72
4. Step 4: Simplify right side
   461,338.72x = 165,614,124,353.89
5. Step 5: Solve for x
   x = 165,614,124,353.89/461,338.72
6. Step 6: Final answer
   x = 358,985.96