Finding the Fourth Proportional to 83.08, 114.69 and 61.30

Step by Step Solution

1. Step 1: Write the proportion equation
   83.08 : 114.69 = 61.30 : x
2. Step 2: Convert to fraction form
   83.08/114.69 = 61.30/x
3. Step 3: Cross multiply
   83.08x = 114.69 × 61.30
4. Step 4: Simplify right side
   83.08x = 7,030.50
5. Step 5: Solve for x
   x = 7,030.50/83.08
6. Step 6: Final answer
   x = 84.62