Finding the Fourth Proportional to 52,831.17, 72,906.89 and 28,957.95

Step by Step Solution

1. Step 1: Write the proportion equation
   52,831.17 : 72,906.89 = 28,957.95 : x
2. Step 2: Convert to fraction form
   52,831.17/72,906.89 = 28,957.95/x
3. Step 3: Cross multiply
   52,831.17x = 72,906.89 × 28,957.95
4. Step 4: Simplify right side
   52,831.17x = 2,111,233,930.49
5. Step 5: Solve for x
   x = 2,111,233,930.49/52,831.17
6. Step 6: Final answer
   x = 39,961.90