Finding the Fourth Proportional to 59,010.76, 81,464.97 and 39,991

Step by Step Solution

1. Step 1: Write the proportion equation
   59,010.76 : 81,464.97 = 39,991 : x
2. Step 2: Convert to fraction form
   59,010.76/81,464.97 = 39,991/x
3. Step 3: Cross multiply
   59,010.76x = 81,464.97 × 39,991
4. Step 4: Simplify right side
   59,010.76x = 3,257,865,615.27
5. Step 5: Solve for x
   x = 3,257,865,615.27/59,010.76
6. Step 6: Final answer
   x = 55,207.99