Finding the Fourth Proportional to 142,752.42, 196,990.11 and 79,086.42

Step by Step Solution

1. Step 1: Write the proportion equation
   142,752.42 : 196,990.11 = 79,086.42 : x
2. Step 2: Convert to fraction form
   142,752.42/196,990.11 = 79,086.42/x
3. Step 3: Cross multiply
   142,752.42x = 196,990.11 × 79,086.42
4. Step 4: Simplify right side
   142,752.42x = 15,579,242,575.31
5. Step 5: Solve for x
   x = 15,579,242,575.31/142,752.42
6. Step 6: Final answer
   x = 109,134.70