Finding the Fourth Proportional to 404,971.27, 558,866.27 and 235,205.40

Step by Step Solution

1. Step 1: Write the proportion equation
   404,971.27 : 558,866.27 = 235,205.40 : x
2. Step 2: Convert to fraction form
   404,971.27/558,866.27 = 235,205.40/x
3. Step 3: Cross multiply
   404,971.27x = 558,866.27 × 235,205.40
4. Step 4: Simplify right side
   404,971.27x = 131,448,364,581.86
5. Step 5: Solve for x
   x = 131,448,364,581.86/404,971.27
6. Step 6: Final answer
   x = 324,586.89