Finding the Fourth Proportional to 296,478.43, 409,139.98 and 160,513.55

Step by Step Solution

1. Step 1: Write the proportion equation
   296,478.43 : 409,139.98 = 160,513.55 : x
2. Step 2: Convert to fraction form
   296,478.43/409,139.98 = 160,513.55/x
3. Step 3: Cross multiply
   296,478.43x = 409,139.98 × 160,513.55
4. Step 4: Simplify right side
   296,478.43x = 65,672,507,788.46
5. Step 5: Solve for x
   x = 65,672,507,788.46/296,478.43
6. Step 6: Final answer
   x = 221,508.56