Finding the Fourth Proportional to 139,479.02, 192,480.27 and 79,061.09

Step by Step Solution

1. Step 1: Write the proportion equation
   139,479.02 : 192,480.27 = 79,061.09 : x
2. Step 2: Convert to fraction form
   139,479.02/192,480.27 = 79,061.09/x
3. Step 3: Cross multiply
   139,479.02x = 192,480.27 × 79,061.09
4. Step 4: Simplify right side
   139,479.02x = 15,217,699,949.69
5. Step 5: Solve for x
   x = 15,217,699,949.69/139,479.02
6. Step 6: Final answer
   x = 109,103.86