Finding the Fourth Proportional to 52,581.42, 72,561.81 and 28,708.02

Step by Step Solution

1. Step 1: Write the proportion equation
   52,581.42 : 72,561.81 = 28,708.02 : x
2. Step 2: Convert to fraction form
   52,581.42/72,561.81 = 28,708.02/x
3. Step 3: Cross multiply
   52,581.42x = 72,561.81 × 28,708.02
4. Step 4: Simplify right side
   52,581.42x = 2,083,105,892.72
5. Step 5: Solve for x
   x = 2,083,105,892.72/52,581.42
6. Step 6: Final answer
   x = 39,616.77