Finding the Fourth Proportional to 139,491.42, 192,494.10 and 79,067.62

Step by Step Solution

1. Step 1: Write the proportion equation
   139,491.42 : 192,494.10 = 79,067.62 : x
2. Step 2: Convert to fraction form
   139,491.42/192,494.10 = 79,067.62/x
3. Step 3: Cross multiply
   139,491.42x = 192,494.10 × 79,067.62
4. Step 4: Simplify right side
   139,491.42x = 15,220,050,351.04
5. Step 5: Solve for x
   x = 15,220,050,351.04/139,491.42
6. Step 6: Final answer
   x = 109,111.01