Finding the Fourth Proportional to 479,443.38, 661,647.72 and 261,663.94

Step by Step Solution

1. Step 1: Write the proportion equation
   479,443.38 : 661,647.72 = 261,663.94 : x
2. Step 2: Convert to fraction form
   479,443.38/661,647.72 = 261,663.94/x
3. Step 3: Cross multiply
   479,443.38x = 661,647.72 × 261,663.94
4. Step 4: Simplify right side
   479,443.38x = 173,129,349,307.22
5. Step 5: Solve for x
   x = 173,129,349,307.22/479,443.38
6. Step 6: Final answer
   x = 361,104.89