Finding the Fourth Proportional to 67.89, 93.61 and 54.06

Step by Step Solution

1. Step 1: Write the proportion equation
   67.89 : 93.61 = 54.06 : x
2. Step 2: Convert to fraction form
   67.89/93.61 = 54.06/x
3. Step 3: Cross multiply
   67.89x = 93.61 × 54.06
4. Step 4: Simplify right side
   67.89x = 5,060.56
5. Step 5: Solve for x
   x = 5,060.56/67.89
6. Step 6: Final answer
   x = 74.54