Finding the Fourth Proportional to 111.58, 167.40 and 65.83

Step by Step Solution

1. Step 1: Write the proportion equation
   111.58 : 167.40 = 65.83 : x
2. Step 2: Convert to fraction form
   111.58/167.40 = 65.83/x
3. Step 3: Cross multiply
   111.58x = 167.40 × 65.83
4. Step 4: Simplify right side
   111.58x = 11,018.78
5. Step 5: Solve for x
   x = 11,018.78/111.58
6. Step 6: Final answer
   x = 98.76