Finding the Fourth Proportional to 142,315.94, 213,401.38 and 47,512.06

Step by Step Solution

1. Step 1: Write the proportion equation
   142,315.94 : 213,401.38 = 47,512.06 : x
2. Step 2: Convert to fraction form
   142,315.94/213,401.38 = 47,512.06/x
3. Step 3: Cross multiply
   142,315.94x = 213,401.38 × 47,512.06
4. Step 4: Simplify right side
   142,315.94x = 10,139,139,170.64
5. Step 5: Solve for x
   x = 10,139,139,170.64/142,315.94
6. Step 6: Final answer
   x = 71,243.88