Finding the Fourth Proportional to 49,112.20, 68,912.60 and 49,112.20

Step by Step Solution

1. Step 1: Write the proportion equation
   49,112.20 : 68,912.60 = 49,112.20 : x
2. Step 2: Convert to fraction form
   49,112.20/68,912.60 = 49,112.20/x
3. Step 3: Cross multiply
   49,112.20x = 68,912.60 × 49,112.20
4. Step 4: Simplify right side
   49,112.20x = 3,384,449,393.72
5. Step 5: Solve for x
   x = 3,384,449,393.72/49,112.20
6. Step 6: Final answer
   x = 68,912.60