Finding the Fourth Proportional to 104.42, 156.59 and 61.10

Step by Step Solution

1. Step 1: Write the proportion equation
   104.42 : 156.59 = 61.10 : x
2. Step 2: Convert to fraction form
   104.42/156.59 = 61.10/x
3. Step 3: Cross multiply
   104.42x = 156.59 × 61.10
4. Step 4: Simplify right side
   104.42x = 9,567.73
5. Step 5: Solve for x
   x = 9,567.73/104.42
6. Step 6: Final answer
   x = 91.63