Finding the Fourth Proportional to 139.83, 209.53 and 114.03

Step by Step Solution

1. Step 1: Write the proportion equation
   139.83 : 209.53 = 114.03 : x
2. Step 2: Convert to fraction form
   139.83/209.53 = 114.03/x
3. Step 3: Cross multiply
   139.83x = 209.53 × 114.03
4. Step 4: Simplify right side
   139.83x = 23,892.71
5. Step 5: Solve for x
   x = 23,892.71/139.83
6. Step 6: Final answer
   x = 170.87