Finding the Fourth Proportional to 394,105.82, 543,867.69 and 222,025.85

Step by Step Solution

1. Step 1: Write the proportion equation
   394,105.82 : 543,867.69 = 222,025.85 : x
2. Step 2: Convert to fraction form
   394,105.82/543,867.69 = 222,025.85/x
3. Step 3: Cross multiply
   394,105.82x = 543,867.69 × 222,025.85
4. Step 4: Simplify right side
   394,105.82x = 120,752,686,312.55
5. Step 5: Solve for x
   x = 120,752,686,312.55/394,105.82
6. Step 6: Final answer
   x = 306,396.61