Finding the Fourth Proportional to 122,448.96, 168,959.52 and 72,141.12

Step by Step Solution

1. Step 1: Write the proportion equation
   122,448.96 : 168,959.52 = 72,141.12 : x
2. Step 2: Convert to fraction form
   122,448.96/168,959.52 = 72,141.12/x
3. Step 3: Cross multiply
   122,448.96x = 168,959.52 × 72,141.12
4. Step 4: Simplify right side
   122,448.96x = 12,188,929,007.46
5. Step 5: Solve for x
   x = 12,188,929,007.46/122,448.96
6. Step 6: Final answer
   x = 99,542.94