Finding the Fourth Proportional to 104.56, 156.71 and 61.25

Step by Step Solution

1. Step 1: Write the proportion equation
   104.56 : 156.71 = 61.25 : x
2. Step 2: Convert to fraction form
   104.56/156.71 = 61.25/x
3. Step 3: Cross multiply
   104.56x = 156.71 × 61.25
4. Step 4: Simplify right side
   104.56x = 9,597.86
5. Step 5: Solve for x
   x = 9,597.86/104.56
6. Step 6: Final answer
   x = 91.80