Finding the Fourth Proportional to 52,616.47, 72,609.82 and 28,742.53

Step by Step Solution

1. Step 1: Write the proportion equation
   52,616.47 : 72,609.82 = 28,742.53 : x
2. Step 2: Convert to fraction form
   52,616.47/72,609.82 = 28,742.53/x
3. Step 3: Cross multiply
   52,616.47x = 72,609.82 × 28,742.53
4. Step 4: Simplify right side
   52,616.47x = 2,086,990,111.17
5. Step 5: Solve for x
   x = 2,086,990,111.17/52,616.47
6. Step 6: Final answer
   x = 39,664.20