Finding the Fourth Proportional to 443,142.32, 664,574.05 and 143,553.39

Step by Step Solution

1. Step 1: Write the proportion equation
   443,142.32 : 664,574.05 = 143,553.39 : x
2. Step 2: Convert to fraction form
   443,142.32/664,574.05 = 143,553.39/x
3. Step 3: Cross multiply
   443,142.32x = 664,574.05 × 143,553.39
4. Step 4: Simplify right side
   443,142.32x = 95,401,857,783.53
5. Step 5: Solve for x
   x = 95,401,857,783.53/443,142.32
6. Step 6: Final answer
   x = 215,284.92