Finding the Fourth Proportional to 116.49, 174.72 and 71.13

Step by Step Solution

1. Step 1: Write the proportion equation
   116.49 : 174.72 = 71.13 : x
2. Step 2: Convert to fraction form
   116.49/174.72 = 71.13/x
3. Step 3: Cross multiply
   116.49x = 174.72 × 71.13
4. Step 4: Simplify right side
   116.49x = 12,427.83
5. Step 5: Solve for x
   x = 12,427.83/116.49
6. Step 6: Final answer
   x = 106.69