Finding the Fourth Proportional to 80,902.56, 121,342.50 and 34,144.50

Step by Step Solution

1. Step 1: Write the proportion equation
   80,902.56 : 121,342.50 = 34,144.50 : x
2. Step 2: Convert to fraction form
   80,902.56/121,342.50 = 34,144.50/x
3. Step 3: Cross multiply
   80,902.56x = 121,342.50 × 34,144.50
4. Step 4: Simplify right side
   80,902.56x = 4,143,178,991.25
5. Step 5: Solve for x
   x = 4,143,178,991.25/80,902.56
6. Step 6: Final answer
   x = 51,211.96