Finding the Fourth Proportional to 139,046.05, 206,780.25 and 134,617.37

Step by Step Solution

1. Step 1: Write the proportion equation
   139,046.05 : 206,780.25 = 134,617.37 : x
2. Step 2: Convert to fraction form
   139,046.05/206,780.25 = 134,617.37/x
3. Step 3: Cross multiply
   139,046.05x = 206,780.25 × 134,617.37
4. Step 4: Simplify right side
   139,046.05x = 27,836,212,749.86
5. Step 5: Solve for x
   x = 27,836,212,749.86/139,046.05
6. Step 6: Final answer
   x = 200,194.21