Finding the Fourth Proportional to 585,158.96, 807,071.37 and 404,173.78

Step by Step Solution

1. Step 1: Write the proportion equation
   585,158.96 : 807,071.37 = 404,173.78 : x
2. Step 2: Convert to fraction form
   585,158.96/807,071.37 = 404,173.78/x
3. Step 3: Cross multiply
   585,158.96x = 807,071.37 × 404,173.78
4. Step 4: Simplify right side
   585,158.96x = 326,197,082,307.32
5. Step 5: Solve for x
   x = 326,197,082,307.32/585,158.96
6. Step 6: Final answer
   x = 557,450.38