Finding the Fourth Proportional to 443,142.25, 664,573.96 and 143,553.33

Step by Step Solution

1. Step 1: Write the proportion equation
   443,142.25 : 664,573.96 = 143,553.33 : x
2. Step 2: Convert to fraction form
   443,142.25/664,573.96 = 143,553.33/x
3. Step 3: Cross multiply
   443,142.25x = 664,573.96 × 143,553.33
4. Step 4: Simplify right side
   443,142.25x = 95,401,804,989.29
5. Step 5: Solve for x
   x = 95,401,804,989.29/443,142.25
6. Step 6: Final answer
   x = 215,284.83