Finding the Fourth Proportional to 111.47, 153.79 and 67.82

Step by Step Solution

1. Step 1: Write the proportion equation
   111.47 : 153.79 = 67.82 : x
2. Step 2: Convert to fraction form
   111.47/153.79 = 67.82/x
3. Step 3: Cross multiply
   111.47x = 153.79 × 67.82
4. Step 4: Simplify right side
   111.47x = 10,429.10
5. Step 5: Solve for x
   x = 10,429.10/111.47
6. Step 6: Final answer
   x = 93.56