Finding the Fourth Proportional to 72.93, 109.23 and 67.71

Step by Step Solution

1. Step 1: Write the proportion equation
   72.93 : 109.23 = 67.71 : x
2. Step 2: Convert to fraction form
   72.93/109.23 = 67.71/x
3. Step 3: Cross multiply
   72.93x = 109.23 × 67.71
4. Step 4: Simplify right side
   72.93x = 7,395.96
5. Step 5: Solve for x
   x = 7,395.96/72.93
6. Step 6: Final answer
   x = 101.41