Finding the Fourth Proportional to 139,613.25, 192,651.69 and 79,164.57

Step by Step Solution

1. Step 1: Write the proportion equation
   139,613.25 : 192,651.69 = 79,164.57 : x
2. Step 2: Convert to fraction form
   139,613.25/192,651.69 = 79,164.57/x
3. Step 3: Cross multiply
   139,613.25x = 192,651.69 × 79,164.57
4. Step 4: Simplify right side
   139,613.25x = 15,251,188,198.62
5. Step 5: Solve for x
   x = 15,251,188,198.62/139,613.25
6. Step 6: Final answer
   x = 109,238.83