Finding the Fourth Proportional to 142,262.52, 213,348.21 and 79,112.89

Step by Step Solution

1. Step 1: Write the proportion equation
   142,262.52 : 213,348.21 = 79,112.89 : x
2. Step 2: Convert to fraction form
   142,262.52/213,348.21 = 79,112.89/x
3. Step 3: Cross multiply
   142,262.52x = 213,348.21 × 79,112.89
4. Step 4: Simplify right side
   142,262.52x = 16,878,593,469.43
5. Step 5: Solve for x
   x = 16,878,593,469.43/142,262.52
6. Step 6: Final answer
   x = 118,643.99