Finding the Fourth Proportional to 139,704.41, 192,786.73 and 79,271.45

Step by Step Solution

1. Step 1: Write the proportion equation
   139,704.41 : 192,786.73 = 79,271.45 : x
2. Step 2: Convert to fraction form
   139,704.41/192,786.73 = 79,271.45/x
3. Step 3: Cross multiply
   139,704.41x = 192,786.73 × 79,271.45
4. Step 4: Simplify right side
   139,704.41x = 15,282,483,911.65
5. Step 5: Solve for x
   x = 15,282,483,911.65/139,704.41
6. Step 6: Final answer
   x = 109,391.56