Finding the Fourth Proportional to 443,401.98, 611,700.36 and 271,328.21

Step by Step Solution

1. Step 1: Write the proportion equation
   443,401.98 : 611,700.36 = 271,328.21 : x
2. Step 2: Convert to fraction form
   443,401.98/611,700.36 = 271,328.21/x
3. Step 3: Cross multiply
   443,401.98x = 611,700.36 × 271,328.21
4. Step 4: Simplify right side
   443,401.98x = 165,971,562,378.52
5. Step 5: Solve for x
   x = 165,971,562,378.52/443,401.98
6. Step 6: Final answer
   x = 374,313.99