Finding the Fourth Proportional to 67.98, 101.89 and 55.81

Step by Step Solution

1. Step 1: Write the proportion equation
   67.98 : 101.89 = 55.81 : x
2. Step 2: Convert to fraction form
   67.98/101.89 = 55.81/x
3. Step 3: Cross multiply
   67.98x = 101.89 × 55.81
4. Step 4: Simplify right side
   67.98x = 5,686.40
5. Step 5: Solve for x
   x = 5,686.40/67.98
6. Step 6: Final answer
   x = 83.64