Finding the Fourth Proportional to 461,185.50, 636,436.01 and 259,981.50

Step by Step Solution

1. Step 1: Write the proportion equation
   461,185.50 : 636,436.01 = 259,981.50 : x
2. Step 2: Convert to fraction form
   461,185.50/636,436.01 = 259,981.50/x
3. Step 3: Cross multiply
   461,185.50x = 636,436.01 × 259,981.50
4. Step 4: Simplify right side
   461,185.50x = 165,461,587,233.91
5. Step 5: Solve for x
   x = 165,461,587,233.91/461,185.50
6. Step 6: Final answer
   x = 358,774.48