Finding the Fourth Proportional to 139,369.28, 192,357.62 and 82,769.72

Step by Step Solution

1. Step 1: Write the proportion equation
   139,369.28 : 192,357.62 = 82,769.72 : x
2. Step 2: Convert to fraction form
   139,369.28/192,357.62 = 82,769.72/x
3. Step 3: Cross multiply
   139,369.28x = 192,357.62 × 82,769.72
4. Step 4: Simplify right side
   139,369.28x = 15,921,386,347.27
5. Step 5: Solve for x
   x = 15,921,386,347.27/139,369.28
6. Step 6: Final answer
   x = 114,238.85