Finding the Fourth Proportional to 59,011.76, 81,466.35 and 39,992

Step by Step Solution

1. Step 1: Write the proportion equation
   59,011.76 : 81,466.35 = 39,992 : x
2. Step 2: Convert to fraction form
   59,011.76/81,466.35 = 39,992/x
3. Step 3: Cross multiply
   59,011.76x = 81,466.35 × 39,992
4. Step 4: Simplify right side
   59,011.76x = 3,258,002,269.20
5. Step 5: Solve for x
   x = 3,258,002,269.20/59,011.76
6. Step 6: Final answer
   x = 55,209.37