Finding the Fourth Proportional to 96,831.30, 144,858.15 and 83,828.10

Step by Step Solution

1. Step 1: Write the proportion equation
   96,831.30 : 144,858.15 = 83,828.10 : x
2. Step 2: Convert to fraction form
   96,831.30/144,858.15 = 83,828.10/x
3. Step 3: Cross multiply
   96,831.30x = 144,858.15 × 83,828.10
4. Step 4: Simplify right side
   96,831.30x = 12,143,183,484.02
5. Step 5: Solve for x
   x = 12,143,183,484.02/96,831.30
6. Step 6: Final answer
   x = 125,405.56