Finding the Fourth Proportional to 142,162.05, 213,171.78 and 47,358.91

Step by Step Solution

1. Step 1: Write the proportion equation
   142,162.05 : 213,171.78 = 47,358.91 : x
2. Step 2: Convert to fraction form
   142,162.05/213,171.78 = 47,358.91/x
3. Step 3: Cross multiply
   142,162.05x = 213,171.78 × 47,358.91
4. Step 4: Simplify right side
   142,162.05x = 10,095,582,433.03
5. Step 5: Solve for x
   x = 10,095,582,433.03/142,162.05
6. Step 6: Final answer
   x = 71,014.61