Finding the Fourth Proportional to 404,498.09, 606,559.41 and 236,066.90

Step by Step Solution

1. Step 1: Write the proportion equation
   404,498.09 : 606,559.41 = 236,066.90 : x
2. Step 2: Convert to fraction form
   404,498.09/606,559.41 = 236,066.90/x
3. Step 3: Cross multiply
   404,498.09x = 606,559.41 × 236,066.90
4. Step 4: Simplify right side
   404,498.09x = 143,188,596,551.73
5. Step 5: Solve for x
   x = 143,188,596,551.73/404,498.09
6. Step 6: Final answer
   x = 353,990.79