Finding the Fourth Proportional to 142,685.62, 196,903.74 and 79,022.05

Step by Step Solution

1. Step 1: Write the proportion equation
   142,685.62 : 196,903.74 = 79,022.05 : x
2. Step 2: Convert to fraction form
   142,685.62/196,903.74 = 79,022.05/x
3. Step 3: Cross multiply
   142,685.62x = 196,903.74 × 79,022.05
4. Step 4: Simplify right side
   142,685.62x = 15,559,737,187.47
5. Step 5: Solve for x
   x = 15,559,737,187.47/142,685.62
6. Step 6: Final answer
   x = 109,049.09