Finding the Fourth Proportional to 78,991.27, 108,997.43 and 50,735.23

Step by Step Solution

1. Step 1: Write the proportion equation
   78,991.27 : 108,997.43 = 50,735.23 : x
2. Step 2: Convert to fraction form
   78,991.27/108,997.43 = 50,735.23/x
3. Step 3: Cross multiply
   78,991.27x = 108,997.43 × 50,735.23
4. Step 4: Simplify right side
   78,991.27x = 5,530,009,426.78
5. Step 5: Solve for x
   x = 5,530,009,426.78/78,991.27
6. Step 6: Final answer
   x = 70,007.86