Finding the Fourth Proportional to 139.50, 190.71 and 133.83

Step by Step Solution

1. Step 1: Write the proportion equation
   139.50 : 190.71 = 133.83 : x
2. Step 2: Convert to fraction form
   139.50/190.71 = 133.83/x
3. Step 3: Cross multiply
   139.50x = 190.71 × 133.83
4. Step 4: Simplify right side
   139.50x = 25,522.72
5. Step 5: Solve for x
   x = 25,522.72/139.50
6. Step 6: Final answer
   x = 182.96