Finding the Fourth Proportional to 142,839.50, 197,118.69 and 79,186.82

Step by Step Solution

1. Step 1: Write the proportion equation
   142,839.50 : 197,118.69 = 79,186.82 : x
2. Step 2: Convert to fraction form
   142,839.50/197,118.69 = 79,186.82/x
3. Step 3: Cross multiply
   142,839.50x = 197,118.69 × 79,186.82
4. Step 4: Simplify right side
   142,839.50x = 15,609,202,223.67
5. Step 5: Solve for x
   x = 15,609,202,223.67/142,839.50
6. Step 6: Final answer
   x = 109,277.91