Finding the Fourth Proportional to 404,097.05, 557,074.51 and 317,906.34

Step by Step Solution

1. Step 1: Write the proportion equation
   404,097.05 : 557,074.51 = 317,906.34 : x
2. Step 2: Convert to fraction form
   404,097.05/557,074.51 = 317,906.34/x
3. Step 3: Cross multiply
   404,097.05x = 557,074.51 × 317,906.34
4. Step 4: Simplify right side
   404,097.05x = 177,097,522,186.14
5. Step 5: Solve for x
   x = 177,097,522,186.14/404,097.05
6. Step 6: Final answer
   x = 438,254.92