Finding the Fourth Proportional to 404,273.05, 605,899.28 and 204,648.55

Step by Step Solution

1. Step 1: Write the proportion equation
   404,273.05 : 605,899.28 = 204,648.55 : x
2. Step 2: Convert to fraction form
   404,273.05/605,899.28 = 204,648.55/x
3. Step 3: Cross multiply
   404,273.05x = 605,899.28 × 204,648.55
4. Step 4: Simplify right side
   404,273.05x = 123,996,408,074.80
5. Step 5: Solve for x
   x = 123,996,408,074.80/404,273.05
6. Step 6: Final answer
   x = 306,714.50