Finding the Fourth Proportional to 404,900.90, 558,763.24 and 235,145.96

Step by Step Solution

1. Step 1: Write the proportion equation
   404,900.90 : 558,763.24 = 235,145.96 : x
2. Step 2: Convert to fraction form
   404,900.90/558,763.24 = 235,145.96/x
3. Step 3: Cross multiply
   404,900.90x = 558,763.24 × 235,145.96
4. Step 4: Simplify right side
   404,900.90x = 131,390,917,085.60
5. Step 5: Solve for x
   x = 131,390,917,085.60/404,900.90
6. Step 6: Final answer
   x = 324,501.42