Finding the Fourth Proportional to 300,685.72, 414,946.80 and 164,716.69

Step by Step Solution

1. Step 1: Write the proportion equation
   300,685.72 : 414,946.80 = 164,716.69 : x
2. Step 2: Convert to fraction form
   300,685.72/414,946.80 = 164,716.69/x
3. Step 3: Cross multiply
   300,685.72x = 414,946.80 × 164,716.69
4. Step 4: Simplify right side
   300,685.72x = 68,348,663,422.09
5. Step 5: Solve for x
   x = 68,348,663,422.09/300,685.72
6. Step 6: Final answer
   x = 227,309.31