Finding the Fourth Proportional to 138,844.31, 208,223.41 and 50,086.29

Step by Step Solution

1. Step 1: Write the proportion equation
   138,844.31 : 208,223.41 = 50,086.29 : x
2. Step 2: Convert to fraction form
   138,844.31/208,223.41 = 50,086.29/x
3. Step 3: Cross multiply
   138,844.31x = 208,223.41 × 50,086.29
4. Step 4: Simplify right side
   138,844.31x = 10,429,137,847.62
5. Step 5: Solve for x
   x = 10,429,137,847.62/138,844.31
6. Step 6: Final answer
   x = 75,113.90