Finding the Fourth Proportional to 139,867.38, 209,801.25 and 106,775.31

Step by Step Solution

1. Step 1: Write the proportion equation
   139,867.38 : 209,801.25 = 106,775.31 : x
2. Step 2: Convert to fraction form
   139,867.38/209,801.25 = 106,775.31/x
3. Step 3: Cross multiply
   139,867.38x = 209,801.25 × 106,775.31
4. Step 4: Simplify right side
   139,867.38x = 22,401,593,507.14
5. Step 5: Solve for x
   x = 22,401,593,507.14/139,867.38
6. Step 6: Final answer
   x = 160,163.10