Finding the Fourth Proportional to 80,978,087.12, 111,763,122.81 and 49,633,571.64

Step by Step Solution

1. Step 1: Write the proportion equation
   80,978,087.12 : 111,763,122.81 = 49,633,571.64 : x
2. Step 2: Convert to fraction form
   80,978,087.12/111,763,122.81 = 49,633,571.64/x
3. Step 3: Cross multiply
   80,978,087.12x = 111,763,122.81 × 49,633,571.64
4. Step 4: Simplify right side
   80,978,087.12x = 5,547,202,963,352,146
5. Step 5: Solve for x
   x = 5,547,202,963,352,146/80,978,087.12
6. Step 6: Final answer
   x = 68,502,519.15