Finding the Fourth Proportional to 76.42, 105.24 and 67.33

Step by Step Solution

1. Step 1: Write the proportion equation
   76.42 : 105.24 = 67.33 : x
2. Step 2: Convert to fraction form
   76.42/105.24 = 67.33/x
3. Step 3: Cross multiply
   76.42x = 105.24 × 67.33
4. Step 4: Simplify right side
   76.42x = 7,085.81
5. Step 5: Solve for x
   x = 7,085.81/76.42
6. Step 6: Final answer
   x = 92.72