Finding the Fourth Proportional to 404,719.88, 557,994.22 and 331,854.30

Step by Step Solution

1. Step 1: Write the proportion equation
   404,719.88 : 557,994.22 = 331,854.30 : x
2. Step 2: Convert to fraction form
   404,719.88/557,994.22 = 331,854.30/x
3. Step 3: Cross multiply
   404,719.88x = 557,994.22 × 331,854.30
4. Step 4: Simplify right side
   404,719.88x = 185,172,780,452.51
5. Step 5: Solve for x
   x = 185,172,780,452.51/404,719.88
6. Step 6: Final answer
   x = 457,533.20