Finding the Fourth Proportional to 404,152.20, 606,290.57 and 137,850.50

Step by Step Solution

1. Step 1: Write the proportion equation
   404,152.20 : 606,290.57 = 137,850.50 : x
2. Step 2: Convert to fraction form
   404,152.20/606,290.57 = 137,850.50/x
3. Step 3: Cross multiply
   404,152.20x = 606,290.57 × 137,850.50
4. Step 4: Simplify right side
   404,152.20x = 83,577,458,219.79
5. Step 5: Solve for x
   x = 83,577,458,219.79/404,152.20
6. Step 6: Final answer
   x = 206,796.99