Finding the Fourth Proportional to 192,659.92, 288,960.72 and 52,429.48

Step by Step Solution

1. Step 1: Write the proportion equation
   192,659.92 : 288,960.72 = 52,429.48 : x
2. Step 2: Convert to fraction form
   192,659.92/288,960.72 = 52,429.48/x
3. Step 3: Cross multiply
   192,659.92x = 288,960.72 × 52,429.48
4. Step 4: Simplify right side
   192,659.92x = 15,150,060,290.03
5. Step 5: Solve for x
   x = 15,150,060,290.03/192,659.92
6. Step 6: Final answer
   x = 78,636.28