Finding the Fourth Proportional to 67.79, 101.78 and 38.93

Step by Step Solution

1. Step 1: Write the proportion equation
   67.79 : 101.78 = 38.93 : x
2. Step 2: Convert to fraction form
   67.79/101.78 = 38.93/x
3. Step 3: Cross multiply
   67.79x = 101.78 × 38.93
4. Step 4: Simplify right side
   67.79x = 3,962.72
5. Step 5: Solve for x
   x = 3,962.72/67.79
6. Step 6: Final answer
   x = 58.46