Finding the Fourth Proportional to 72,447.37, 108,143.36 and 67,105.04

Step by Step Solution

1. Step 1: Write the proportion equation
   72,447.37 : 108,143.36 = 67,105.04 : x
2. Step 2: Convert to fraction form
   72,447.37/108,143.36 = 67,105.04/x
3. Step 3: Cross multiply
   72,447.37x = 108,143.36 × 67,105.04
4. Step 4: Simplify right side
   72,447.37x = 7,256,964,859.71
5. Step 5: Solve for x
   x = 7,256,964,859.71/72,447.37
6. Step 6: Final answer
   x = 100,168.78