Finding the Fourth Proportional to 111.67, 153.82 and 93.35

Step by Step Solution

1. Step 1: Write the proportion equation
   111.67 : 153.82 = 93.35 : x
2. Step 2: Convert to fraction form
   111.67/153.82 = 93.35/x
3. Step 3: Cross multiply
   111.67x = 153.82 × 93.35
4. Step 4: Simplify right side
   111.67x = 14,359.10
5. Step 5: Solve for x
   x = 14,359.10/111.67
6. Step 6: Final answer
   x = 128.59