Finding the Fourth Proportional to 300,686.72, 414,948.18 and 164,717.69

Step by Step Solution

1. Step 1: Write the proportion equation
   300,686.72 : 414,948.18 = 164,717.69 : x
2. Step 2: Convert to fraction form
   300,686.72/414,948.18 = 164,717.69/x
3. Step 3: Cross multiply
   300,686.72x = 414,948.18 × 164,717.69
4. Step 4: Simplify right side
   300,686.72x = 68,349,305,679.30
5. Step 5: Solve for x
   x = 68,349,305,679.30/300,686.72
6. Step 6: Final answer
   x = 227,310.69