Finding the Fourth Proportional to 404,326.10, 606,404.10 and 204,458.60

Step by Step Solution

1. Step 1: Write the proportion equation
   404,326.10 : 606,404.10 = 204,458.60 : x
2. Step 2: Convert to fraction form
   404,326.10/606,404.10 = 204,458.60/x
3. Step 3: Cross multiply
   404,326.10x = 606,404.10 × 204,458.60
4. Step 4: Simplify right side
   404,326.10x = 123,984,533,320.26
5. Step 5: Solve for x
   x = 123,984,533,320.26/404,326.10
6. Step 6: Final answer
   x = 306,644.89