Finding the Fourth Proportional to 43,540, 65,300.76 and 13,949.92

Step by Step Solution

1. Step 1: Write the proportion equation
   43,540 : 65,300.76 = 13,949.92 : x
2. Step 2: Convert to fraction form
   43,540/65,300.76 = 13,949.92/x
3. Step 3: Cross multiply
   43,540x = 65,300.76 × 13,949.92
4. Step 4: Simplify right side
   43,540x = 910,940,377.94
5. Step 5: Solve for x
   x = 910,940,377.94/43,540
6. Step 6: Final answer
   x = 20,921.92