Finding the Fourth Proportional to 67.72, 93.52 and 53.88

Step by Step Solution

1. Step 1: Write the proportion equation
   67.72 : 93.52 = 53.88 : x
2. Step 2: Convert to fraction form
   67.72/93.52 = 53.88/x
3. Step 3: Cross multiply
   67.72x = 93.52 × 53.88
4. Step 4: Simplify right side
   67.72x = 5,038.86
5. Step 5: Solve for x
   x = 5,038.86/67.72
6. Step 6: Final answer
   x = 74.41