Finding the Fourth Proportional to 103,171.78, 154,757.72 and 68,103.24

Step by Step Solution

1. Step 1: Write the proportion equation
   103,171.78 : 154,757.72 = 68,103.24 : x
2. Step 2: Convert to fraction form
   103,171.78/154,757.72 = 68,103.24/x
3. Step 3: Cross multiply
   103,171.78x = 154,757.72 × 68,103.24
4. Step 4: Simplify right side
   103,171.78x = 10,539,502,147.01
5. Step 5: Solve for x
   x = 10,539,502,147.01/103,171.78
6. Step 6: Final answer
   x = 102,154.89