Finding the Fourth Proportional to 443,105.46, 664,875.09 and 274,580.73

Step by Step Solution

1. Step 1: Write the proportion equation
   443,105.46 : 664,875.09 = 274,580.73 : x
2. Step 2: Convert to fraction form
   443,105.46/664,875.09 = 274,580.73/x
3. Step 3: Cross multiply
   443,105.46x = 664,875.09 × 274,580.73
4. Step 4: Simplify right side
   443,105.46x = 182,561,887,571.02
5. Step 5: Solve for x
   x = 182,561,887,571.02/443,105.46
6. Step 6: Final answer
   x = 412,005.50