Finding the Fourth Proportional to 111.43, 167.10 and 42.93

Step by Step Solution

1. Step 1: Write the proportion equation
   111.43 : 167.10 = 42.93 : x
2. Step 2: Convert to fraction form
   111.43/167.10 = 42.93/x
3. Step 3: Cross multiply
   111.43x = 167.10 × 42.93
4. Step 4: Simplify right side
   111.43x = 7,173.60
5. Step 5: Solve for x
   x = 7,173.60/111.43
6. Step 6: Final answer
   x = 64.38