Finding the Fourth Proportional to 404,145.01, 606,217.42 and 137,905.51

Step by Step Solution

1. Step 1: Write the proportion equation
   404,145.01 : 606,217.42 = 137,905.51 : x
2. Step 2: Convert to fraction form
   404,145.01/606,217.42 = 137,905.51/x
3. Step 3: Cross multiply
   404,145.01x = 606,217.42 × 137,905.51
4. Step 4: Simplify right side
   404,145.01x = 83,600,722,475.98
5. Step 5: Solve for x
   x = 83,600,722,475.98/404,145.01
6. Step 6: Final answer
   x = 206,858.23