Finding the Fourth Proportional to 231,831.32, 347,748.80 and 82,072.24

Step by Step Solution

1. Step 1: Write the proportion equation
   231,831.32 : 347,748.80 = 82,072.24 : x
2. Step 2: Convert to fraction form
   231,831.32/347,748.80 = 82,072.24/x
3. Step 3: Cross multiply
   231,831.32x = 347,748.80 × 82,072.24
4. Step 4: Simplify right side
   231,831.32x = 28,540,521,693.58
5. Step 5: Solve for x
   x = 28,540,521,693.58/231,831.32
6. Step 6: Final answer
   x = 123,109.00