Finding the Fourth Proportional to 111.99, 154.56 and 68.34

Step by Step Solution

1. Step 1: Write the proportion equation
   111.99 : 154.56 = 68.34 : x
2. Step 2: Convert to fraction form
   111.99/154.56 = 68.34/x
3. Step 3: Cross multiply
   111.99x = 154.56 × 68.34
4. Step 4: Simplify right side
   111.99x = 10,562.63
5. Step 5: Solve for x
   x = 10,562.63/111.99
6. Step 6: Final answer
   x = 94.32