Finding the Fourth Proportional to 116.08, 173.89 and 61.18

Step by Step Solution

1. Step 1: Write the proportion equation
   116.08 : 173.89 = 61.18 : x
2. Step 2: Convert to fraction form
   116.08/173.89 = 61.18/x
3. Step 3: Cross multiply
   116.08x = 173.89 × 61.18
4. Step 4: Simplify right side
   116.08x = 10,638.59
5. Step 5: Solve for x
   x = 10,638.59/116.08
6. Step 6: Final answer
   x = 91.65