Finding the Fourth Proportional to 139,672.02, 192,768.16 and 82,293

Step by Step Solution

1. Step 1: Write the proportion equation
   139,672.02 : 192,768.16 = 82,293 : x
2. Step 2: Convert to fraction form
   139,672.02/192,768.16 = 82,293/x
3. Step 3: Cross multiply
   139,672.02x = 192,768.16 × 82,293
4. Step 4: Simplify right side
   139,672.02x = 15,863,470,190.88
5. Step 5: Solve for x
   x = 15,863,470,190.88/139,672.02
6. Step 6: Final answer
   x = 113,576.58