Finding the Fourth Proportional to 144,209.34, 199,007.72 and 79,678.38

Step by Step Solution

1. Step 1: Write the proportion equation
   144,209.34 : 199,007.72 = 79,678.38 : x
2. Step 2: Convert to fraction form
   144,209.34/199,007.72 = 79,678.38/x
3. Step 3: Cross multiply
   144,209.34x = 199,007.72 × 79,678.38
4. Step 4: Simplify right side
   144,209.34x = 15,856,612,737.09
5. Step 5: Solve for x
   x = 15,856,612,737.09/144,209.34
6. Step 6: Final answer
   x = 109,955.52