Finding the Fourth Proportional to 51,521.31, 71,105.31 and 28,866.42

Step by Step Solution

1. Step 1: Write the proportion equation
   51,521.31 : 71,105.31 = 28,866.42 : x
2. Step 2: Convert to fraction form
   51,521.31/71,105.31 = 28,866.42/x
3. Step 3: Cross multiply
   51,521.31x = 71,105.31 × 28,866.42
4. Step 4: Simplify right side
   51,521.31x = 2,052,555,742.69
5. Step 5: Solve for x
   x = 2,052,555,742.69/51,521.31
6. Step 6: Final answer
   x = 39,838.97