Finding the Fourth Proportional to 111.71, 167.50 and 60.34

Step by Step Solution

1. Step 1: Write the proportion equation
   111.71 : 167.50 = 60.34 : x
2. Step 2: Convert to fraction form
   111.71/167.50 = 60.34/x
3. Step 3: Cross multiply
   111.71x = 167.50 × 60.34
4. Step 4: Simplify right side
   111.71x = 10,106.95
5. Step 5: Solve for x
   x = 10,106.95/111.71
6. Step 6: Final answer
   x = 90.47