Finding the Fourth Proportional to 138,844.56, 208,223.78 and 50,086.54

Step by Step Solution

1. Step 1: Write the proportion equation
   138,844.56 : 208,223.78 = 50,086.54 : x
2. Step 2: Convert to fraction form
   138,844.56/208,223.78 = 50,086.54/x
3. Step 3: Cross multiply
   138,844.56x = 208,223.78 × 50,086.54
4. Step 4: Simplify right side
   138,844.56x = 10,429,208,290.58
5. Step 5: Solve for x
   x = 10,429,208,290.58/138,844.56
6. Step 6: Final answer
   x = 75,114.27