Finding the Fourth Proportional to 111.56, 167.35 and 43.06

Step by Step Solution

1. Step 1: Write the proportion equation
   111.56 : 167.35 = 43.06 : x
2. Step 2: Convert to fraction form
   111.56/167.35 = 43.06/x
3. Step 3: Cross multiply
   111.56x = 167.35 × 43.06
4. Step 4: Simplify right side
   111.56x = 7,206.09
5. Step 5: Solve for x
   x = 7,206.09/111.56
6. Step 6: Final answer
   x = 64.59