Finding the Fourth Proportional to 111.84, 167.61 and 43.30

Step by Step Solution

1. Step 1: Write the proportion equation
   111.84 : 167.61 = 43.30 : x
2. Step 2: Convert to fraction form
   111.84/167.61 = 43.30/x
3. Step 3: Cross multiply
   111.84x = 167.61 × 43.30
4. Step 4: Simplify right side
   111.84x = 7,257.51
5. Step 5: Solve for x
   x = 7,257.51/111.84
6. Step 6: Final answer
   x = 64.89