Finding the Fourth Proportional to 443,918.96, 665,944.72 and 163,414.88

Step by Step Solution

1. Step 1: Write the proportion equation
   443,918.96 : 665,944.72 = 163,414.88 : x
2. Step 2: Convert to fraction form
   443,918.96/665,944.72 = 163,414.88/x
3. Step 3: Cross multiply
   443,918.96x = 665,944.72 × 163,414.88
4. Step 4: Simplify right side
   443,918.96x = 108,825,276,505.43
5. Step 5: Solve for x
   x = 108,825,276,505.43/443,918.96
6. Step 6: Final answer
   x = 245,146.72