Finding the Fourth Proportional to 59,016.40, 81,472.74 and 39,996.69

Step by Step Solution

1. Step 1: Write the proportion equation
   59,016.40 : 81,472.74 = 39,996.69 : x
2. Step 2: Convert to fraction form
   59,016.40/81,472.74 = 39,996.69/x
3. Step 3: Cross multiply
   59,016.40x = 81,472.74 × 39,996.69
4. Step 4: Simplify right side
   59,016.40x = 3,258,639,469.72
5. Step 5: Solve for x
   x = 3,258,639,469.72/59,016.40
6. Step 6: Final answer
   x = 55,215.83