Finding the Fourth Proportional to 78.93, 108.72 and 67.23

Step by Step Solution

1. Step 1: Write the proportion equation
   78.93 : 108.72 = 67.23 : x
2. Step 2: Convert to fraction form
   78.93/108.72 = 67.23/x
3. Step 3: Cross multiply
   78.93x = 108.72 × 67.23
4. Step 4: Simplify right side
   78.93x = 7,309.25
5. Step 5: Solve for x
   x = 7,309.25/78.93
6. Step 6: Final answer
   x = 92.60