Finding the Fourth Proportional to 142,721.25, 196,955.33 and 79,063.17

Step by Step Solution

1. Step 1: Write the proportion equation
   142,721.25 : 196,955.33 = 79,063.17 : x
2. Step 2: Convert to fraction form
   142,721.25/196,955.33 = 79,063.17/x
3. Step 3: Cross multiply
   142,721.25x = 196,955.33 × 79,063.17
4. Step 4: Simplify right side
   142,721.25x = 15,571,912,342.88
5. Step 5: Solve for x
   x = 15,571,912,342.88/142,721.25
6. Step 6: Final answer
   x = 109,107.17