Finding the Fourth Proportional to 67.37, 100.91 and 55.35

Step by Step Solution

1. Step 1: Write the proportion equation
   67.37 : 100.91 = 55.35 : x
2. Step 2: Convert to fraction form
   67.37/100.91 = 55.35/x
3. Step 3: Cross multiply
   67.37x = 100.91 × 55.35
4. Step 4: Simplify right side
   67.37x = 5,585.51
5. Step 5: Solve for x
   x = 5,585.51/67.37
6. Step 6: Final answer
   x = 82.91