Finding the Fourth Proportional to 143,770.29, 198,404.31 and 79,241.86

Step by Step Solution

1. Step 1: Write the proportion equation
   143,770.29 : 198,404.31 = 79,241.86 : x
2. Step 2: Convert to fraction form
   143,770.29/198,404.31 = 79,241.86/x
3. Step 3: Cross multiply
   143,770.29x = 198,404.31 × 79,241.86
4. Step 4: Simplify right side
   143,770.29x = 15,721,926,556.42
5. Step 5: Solve for x
   x = 15,721,926,556.42/143,770.29
6. Step 6: Final answer
   x = 109,354.49