Finding the Fourth Proportional to 76.28, 105.42 and 67.46

Step by Step Solution

1. Step 1: Write the proportion equation
   76.28 : 105.42 = 67.46 : x
2. Step 2: Convert to fraction form
   76.28/105.42 = 67.46/x
3. Step 3: Cross multiply
   76.28x = 105.42 × 67.46
4. Step 4: Simplify right side
   76.28x = 7,111.11
5. Step 5: Solve for x
   x = 7,111.11/76.28
6. Step 6: Final answer
   x = 93.23