Finding the Fourth Proportional to 262,369.98, 393,583.10 and 72,831.15

Step by Step Solution

1. Step 1: Write the proportion equation
   262,369.98 : 393,583.10 = 72,831.15 : x
2. Step 2: Convert to fraction form
   262,369.98/393,583.10 = 72,831.15/x
3. Step 3: Cross multiply
   262,369.98x = 393,583.10 × 72,831.15
4. Step 4: Simplify right side
   262,369.98x = 28,665,109,429.41
5. Step 5: Solve for x
   x = 28,665,109,429.41/262,369.98
6. Step 6: Final answer
   x = 109,254.53