Finding the Fourth Proportional to 48.98, 67.69 and 37.31

Step by Step Solution

1. Step 1: Write the proportion equation
   48.98 : 67.69 = 37.31 : x
2. Step 2: Convert to fraction form
   48.98/67.69 = 37.31/x
3. Step 3: Cross multiply
   48.98x = 67.69 × 37.31
4. Step 4: Simplify right side
   48.98x = 2,525.39
5. Step 5: Solve for x
   x = 2,525.39/48.98
6. Step 6: Final answer
   x = 51.56