Finding the Fourth Proportional to 69.88, 104.76 and 37.72

Step by Step Solution

1. Step 1: Write the proportion equation
   69.88 : 104.76 = 37.72 : x
2. Step 2: Convert to fraction form
   69.88/104.76 = 37.72/x
3. Step 3: Cross multiply
   69.88x = 104.76 × 37.72
4. Step 4: Simplify right side
   69.88x = 3,951.55
5. Step 5: Solve for x
   x = 3,951.55/69.88
6. Step 6: Final answer
   x = 56.55