Finding the Fourth Proportional to 479,443.62, 661,648.06 and 261,664.18

Step by Step Solution

1. Step 1: Write the proportion equation
   479,443.62 : 661,648.06 = 261,664.18 : x
2. Step 2: Convert to fraction form
   479,443.62/661,648.06 = 261,664.18/x
3. Step 3: Cross multiply
   479,443.62x = 661,648.06 × 261,664.18
4. Step 4: Simplify right side
   479,443.62x = 173,129,597,068.49
5. Step 5: Solve for x
   x = 173,129,597,068.49/479,443.62
6. Step 6: Final answer
   x = 361,105.23