Finding the Fourth Proportional to 404,144.01, 606,215.92 and 137,904.51

Step by Step Solution

1. Step 1: Write the proportion equation
   404,144.01 : 606,215.92 = 137,904.51 : x
2. Step 2: Convert to fraction form
   404,144.01/606,215.92 = 137,904.51/x
3. Step 3: Cross multiply
   404,144.01x = 606,215.92 × 137,904.51
4. Step 4: Simplify right side
   404,144.01x = 83,599,909,401.80
5. Step 5: Solve for x
   x = 83,599,909,401.80/404,144.01
6. Step 6: Final answer
   x = 206,856.73