Finding the Fourth Proportional to 142,456.67, 213,578.89 and 47,630.71

Step by Step Solution

1. Step 1: Write the proportion equation
   142,456.67 : 213,578.89 = 47,630.71 : x
2. Step 2: Convert to fraction form
   142,456.67/213,578.89 = 47,630.71/x
3. Step 3: Cross multiply
   142,456.67x = 213,578.89 × 47,630.71
4. Step 4: Simplify right side
   142,456.67x = 10,172,913,518.69
5. Step 5: Solve for x
   x = 10,172,913,518.69/142,456.67
6. Step 6: Final answer
   x = 71,410.58