Finding the Fourth Proportional to 139,494.22, 209,237.46 and 50,749.36

Step by Step Solution

1. Step 1: Write the proportion equation
   139,494.22 : 209,237.46 = 50,749.36 : x
2. Step 2: Convert to fraction form
   139,494.22/209,237.46 = 50,749.36/x
3. Step 3: Cross multiply
   139,494.22x = 209,237.46 × 50,749.36
4. Step 4: Simplify right side
   139,494.22x = 10,618,667,183.03
5. Step 5: Solve for x
   x = 10,618,667,183.03/139,494.22
6. Step 6: Final answer
   x = 76,122.63