Finding the Fourth Proportional to 404,098.05, 557,075.89 and 317,907.34

Step by Step Solution

1. Step 1: Write the proportion equation
   404,098.05 : 557,075.89 = 317,907.34 : x
2. Step 2: Convert to fraction form
   404,098.05/557,075.89 = 317,907.34/x
3. Step 3: Cross multiply
   404,098.05x = 557,075.89 × 317,907.34
4. Step 4: Simplify right side
   404,098.05x = 177,098,514,368.03
5. Step 5: Solve for x
   x = 177,098,514,368.03/404,098.05
6. Step 6: Final answer
   x = 438,256.30