Finding the Fourth Proportional to 404,358.72, 557,767.77 and 259,115.61

Step by Step Solution

1. Step 1: Write the proportion equation
   404,358.72 : 557,767.77 = 259,115.61 : x
2. Step 2: Convert to fraction form
   404,358.72/557,767.77 = 259,115.61/x
3. Step 3: Cross multiply
   404,358.72x = 557,767.77 × 259,115.61
4. Step 4: Simplify right side
   404,358.72x = 144,526,335,961.89
5. Step 5: Solve for x
   x = 144,526,335,961.89/404,358.72
6. Step 6: Final answer
   x = 357,421.09