Finding the Fourth Proportional to 139,434.52, 192,419.12 and 79,016.67

Step by Step Solution

1. Step 1: Write the proportion equation
   139,434.52 : 192,419.12 = 79,016.67 : x
2. Step 2: Convert to fraction form
   139,434.52/192,419.12 = 79,016.67/x
3. Step 3: Cross multiply
   139,434.52x = 192,419.12 × 79,016.67
4. Step 4: Simplify right side
   139,434.52x = 15,204,317,711.65
5. Step 5: Solve for x
   x = 15,204,317,711.65/139,434.52
6. Step 6: Final answer
   x = 109,042.71