Finding the Fourth Proportional to 142,727.67, 196,514.82 and 121,174.79

Step by Step Solution

1. Step 1: Write the proportion equation
   142,727.67 : 196,514.82 = 121,174.79 : x
2. Step 2: Convert to fraction form
   142,727.67/196,514.82 = 121,174.79/x
3. Step 3: Cross multiply
   142,727.67x = 196,514.82 × 121,174.79
4. Step 4: Simplify right side
   142,727.67x = 23,812,642,045.39
5. Step 5: Solve for x
   x = 23,812,642,045.39/142,727.67
6. Step 6: Final answer
   x = 166,839.70