Finding the Fourth Proportional to 72,240.18, 108,901.69 and 67,423.38

Step by Step Solution

1. Step 1: Write the proportion equation
   72,240.18 : 108,901.69 = 67,423.38 : x
2. Step 2: Convert to fraction form
   72,240.18/108,901.69 = 67,423.38/x
3. Step 3: Cross multiply
   72,240.18x = 108,901.69 × 67,423.38
4. Step 4: Simplify right side
   72,240.18x = 7,342,520,027.51
5. Step 5: Solve for x
   x = 7,342,520,027.51/72,240.18
6. Step 6: Final answer
   x = 101,640.39