Finding the Fourth Proportional to 296,185.83, 408,311.33 and 211,155.27

Step by Step Solution

1. Step 1: Write the proportion equation
   296,185.83 : 408,311.33 = 211,155.27 : x
2. Step 2: Convert to fraction form
   296,185.83/408,311.33 = 211,155.27/x
3. Step 3: Cross multiply
   296,185.83x = 408,311.33 × 211,155.27
4. Step 4: Simplify right side
   296,185.83x = 86,217,088,074.43
5. Step 5: Solve for x
   x = 86,217,088,074.43/296,185.83
6. Step 6: Final answer
   x = 291,091.20