Finding the Fourth Proportional to 543,443.30, 815,456.55 and 227,932.10

Step by Step Solution

1. Step 1: Write the proportion equation
   543,443.30 : 815,456.55 = 227,932.10 : x
2. Step 2: Convert to fraction form
   543,443.30/815,456.55 = 227,932.10/x
3. Step 3: Cross multiply
   543,443.30x = 815,456.55 × 227,932.10
4. Step 4: Simplify right side
   543,443.30x = 185,868,723,900.26
5. Step 5: Solve for x
   x = 185,868,723,900.26/543,443.30
6. Step 6: Final answer
   x = 342,020.45