Finding the Fourth Proportional to 51,564.57, 71,161.91 and 28,910.82

Step by Step Solution

1. Step 1: Write the proportion equation
   51,564.57 : 71,161.91 = 28,910.82 : x
2. Step 2: Convert to fraction form
   51,564.57/71,161.91 = 28,910.82/x
3. Step 3: Cross multiply
   51,564.57x = 71,161.91 × 28,910.82
4. Step 4: Simplify right side
   51,564.57x = 2,057,349,026.31
5. Step 5: Solve for x
   x = 2,057,349,026.31/51,564.57
6. Step 6: Final answer
   x = 39,898.50