Finding the Fourth Proportional to 61.15, 91.72 and 32.28

Step by Step Solution

1. Step 1: Write the proportion equation
   61.15 : 91.72 = 32.28 : x
2. Step 2: Convert to fraction form
   61.15/91.72 = 32.28/x
3. Step 3: Cross multiply
   61.15x = 91.72 × 32.28
4. Step 4: Simplify right side
   61.15x = 2,960.72
5. Step 5: Solve for x
   x = 2,960.72/61.15
6. Step 6: Final answer
   x = 48.42