Finding the Fourth Proportional to 404,267.30, 605,890.65 and 204,642.80

Step by Step Solution

1. Step 1: Write the proportion equation
   404,267.30 : 605,890.65 = 204,642.80 : x
2. Step 2: Convert to fraction form
   404,267.30/605,890.65 = 204,642.80/x
3. Step 3: Cross multiply
   404,267.30x = 605,890.65 × 204,642.80
4. Step 4: Simplify right side
   404,267.30x = 123,991,159,109.82
5. Step 5: Solve for x
   x = 123,991,159,109.82/404,267.30
6. Step 6: Final answer
   x = 306,705.88