Finding the Fourth Proportional to 111.83, 154.35 and 67.58

Step by Step Solution

1. Step 1: Write the proportion equation
   111.83 : 154.35 = 67.58 : x
2. Step 2: Convert to fraction form
   111.83/154.35 = 67.58/x
3. Step 3: Cross multiply
   111.83x = 154.35 × 67.58
4. Step 4: Simplify right side
   111.83x = 10,430.43
5. Step 5: Solve for x
   x = 10,430.43/111.83
6. Step 6: Final answer
   x = 93.27