Finding the Fourth Proportional to 300,690.38, 414,941.89 and 171,635.51

Step by Step Solution

1. Step 1: Write the proportion equation
   300,690.38 : 414,941.89 = 171,635.51 : x
2. Step 2: Convert to fraction form
   300,690.38/414,941.89 = 171,635.51/x
3. Step 3: Cross multiply
   300,690.38x = 414,941.89 × 171,635.51
4. Step 4: Simplify right side
   300,690.38x = 71,218,762,910.51
5. Step 5: Solve for x
   x = 71,218,762,910.51/300,690.38
6. Step 6: Final answer
   x = 236,850.82