Finding the Fourth Proportional to 79.50, 118.98 and 61.50

Step by Step Solution

1. Step 1: Write the proportion equation
   79.50 : 118.98 = 61.50 : x
2. Step 2: Convert to fraction form
   79.50/118.98 = 61.50/x
3. Step 3: Cross multiply
   79.50x = 118.98 × 61.50
4. Step 4: Simplify right side
   79.50x = 7,316.37
5. Step 5: Solve for x
   x = 7,316.37/79.50
6. Step 6: Final answer
   x = 92.04