Finding the Fourth Proportional to 404,412.94, 606,690.72 and 138,111.04

Step by Step Solution

1. Step 1: Write the proportion equation
   404,412.94 : 606,690.72 = 138,111.04 : x
2. Step 2: Convert to fraction form
   404,412.94/606,690.72 = 138,111.04/x
3. Step 3: Cross multiply
   404,412.94x = 606,690.72 × 138,111.04
4. Step 4: Simplify right side
   404,412.94x = 83,790,686,297.55
5. Step 5: Solve for x
   x = 83,790,686,297.55/404,412.94
6. Step 6: Final answer
   x = 207,190.91