Finding the Fourth Proportional to 404,352.72, 557,759.49 and 259,109.61

Step by Step Solution

1. Step 1: Write the proportion equation
   404,352.72 : 557,759.49 = 259,109.61 : x
2. Step 2: Convert to fraction form
   404,352.72/557,759.49 = 259,109.61/x
3. Step 3: Cross multiply
   404,352.72x = 557,759.49 × 259,109.61
4. Step 4: Simplify right side
   404,352.72x = 144,520,844,619.38
5. Step 5: Solve for x
   x = 144,520,844,619.38/404,352.72
6. Step 6: Final answer
   x = 357,412.82