Finding the Fourth Proportional to 52,275.49, 72,139.29 and 28,402.54

Step by Step Solution

1. Step 1: Write the proportion equation
   52,275.49 : 72,139.29 = 28,402.54 : x
2. Step 2: Convert to fraction form
   52,275.49/72,139.29 = 28,402.54/x
3. Step 3: Cross multiply
   52,275.49x = 72,139.29 × 28,402.54
4. Step 4: Simplify right side
   52,275.49x = 2,048,939,069.80
5. Step 5: Solve for x
   x = 2,048,939,069.80/52,275.49
6. Step 6: Final answer
   x = 39,195.02