Finding the Fourth Proportional to 51,517.31, 71,099.79 and 28,862.42

Step by Step Solution

1. Step 1: Write the proportion equation
   51,517.31 : 71,099.79 = 28,862.42 : x
2. Step 2: Convert to fraction form
   51,517.31/71,099.79 = 28,862.42/x
3. Step 3: Cross multiply
   51,517.31x = 71,099.79 × 28,862.42
4. Step 4: Simplify right side
   51,517.31x = 2,052,112,000.89
5. Step 5: Solve for x
   x = 2,052,112,000.89/51,517.31
6. Step 6: Final answer
   x = 39,833.45