Finding the Fourth Proportional to 227,890.72, 341,809.20 and 143,401.60

Step by Step Solution

1. Step 1: Write the proportion equation
   227,890.72 : 341,809.20 = 143,401.60 : x
2. Step 2: Convert to fraction form
   227,890.72/341,809.20 = 143,401.60/x
3. Step 3: Cross multiply
   227,890.72x = 341,809.20 × 143,401.60
4. Step 4: Simplify right side
   227,890.72x = 49,015,986,174.72
5. Step 5: Solve for x
   x = 49,015,986,174.72/227,890.72
6. Step 6: Final answer
   x = 215,085.49