Finding the Fourth Proportional to 404,311.10, 606,381.60 and 204,443.60

Step by Step Solution

1. Step 1: Write the proportion equation
   404,311.10 : 606,381.60 = 204,443.60 : x
2. Step 2: Convert to fraction form
   404,311.10/606,381.60 = 204,443.60/x
3. Step 3: Cross multiply
   404,311.10x = 606,381.60 × 204,443.60
4. Step 4: Simplify right side
   404,311.10x = 123,970,837,277.76
5. Step 5: Solve for x
   x = 123,970,837,277.76/404,311.10
6. Step 6: Final answer
   x = 306,622.39