Finding the Fourth Proportional to 142,760.88, 196,996.32 and 79,097.40

Step by Step Solution

1. Step 1: Write the proportion equation
   142,760.88 : 196,996.32 = 79,097.40 : x
2. Step 2: Convert to fraction form
   142,760.88/196,996.32 = 79,097.40/x
3. Step 3: Cross multiply
   142,760.88x = 196,996.32 × 79,097.40
4. Step 4: Simplify right side
   142,760.88x = 15,581,896,721.57
5. Step 5: Solve for x
   x = 15,581,896,721.57/142,760.88
6. Step 6: Final answer
   x = 109,146.82