Finding the Fourth Proportional to 61.28, 91.86 and 32.39

Step by Step Solution

1. Step 1: Write the proportion equation
   61.28 : 91.86 = 32.39 : x
2. Step 2: Convert to fraction form
   61.28/91.86 = 32.39/x
3. Step 3: Cross multiply
   61.28x = 91.86 × 32.39
4. Step 4: Simplify right side
   61.28x = 2,974.89
5. Step 5: Solve for x
   x = 2,974.89/61.28
6. Step 6: Final answer
   x = 48.55