Finding the Fourth Proportional to 52,139.45, 71,952.12 and 28,266.05

Step by Step Solution

1. Step 1: Write the proportion equation
   52,139.45 : 71,952.12 = 28,266.05 : x
2. Step 2: Convert to fraction form
   52,139.45/71,952.12 = 28,266.05/x
3. Step 3: Cross multiply
   52,139.45x = 71,952.12 × 28,266.05
4. Step 4: Simplify right side
   52,139.45x = 2,033,802,401.41
5. Step 5: Solve for x
   x = 2,033,802,401.41/52,139.45
6. Step 6: Final answer
   x = 39,006.98