Finding the Fourth Proportional to 461,288.72, 636,578.52 and 260,084.72

Step by Step Solution

1. Step 1: Write the proportion equation
   461,288.72 : 636,578.52 = 260,084.72 : x
2. Step 2: Convert to fraction form
   461,288.72/636,578.52 = 260,084.72/x
3. Step 3: Cross multiply
   461,288.72x = 636,578.52 × 260,084.72
4. Step 4: Simplify right side
   461,288.72x = 165,564,346,132.21
5. Step 5: Solve for x
   x = 165,564,346,132.21/461,288.72
6. Step 6: Final answer
   x = 358,916.96