Finding the Fourth Proportional to 404,354.22, 557,761.56 and 259,111.11

Step by Step Solution

1. Step 1: Write the proportion equation
   404,354.22 : 557,761.56 = 259,111.11 : x
2. Step 2: Convert to fraction form
   404,354.22/557,761.56 = 259,111.11/x
3. Step 3: Cross multiply
   404,354.22x = 557,761.56 × 259,111.11
4. Step 4: Simplify right side
   404,354.22x = 144,522,216,926.93
5. Step 5: Solve for x
   x = 144,522,216,926.93/404,354.22
6. Step 6: Final answer
   x = 357,414.88