Finding the Fourth Proportional to 300,422.16, 414,630.86 and 171,402.72

Step by Step Solution

1. Step 1: Write the proportion equation
   300,422.16 : 414,630.86 = 171,402.72 : x
2. Step 2: Convert to fraction form
   300,422.16/414,630.86 = 171,402.72/x
3. Step 3: Cross multiply
   300,422.16x = 414,630.86 × 171,402.72
4. Step 4: Simplify right side
   300,422.16x = 71,068,857,628.45
5. Step 5: Solve for x
   x = 71,068,857,628.45/300,422.16
6. Step 6: Final answer
   x = 236,563.30