Finding the Fourth Proportional to 142,456.62, 213,696.18 and 47,687.38

Step by Step Solution

1. Step 1: Write the proportion equation
   142,456.62 : 213,696.18 = 47,687.38 : x
2. Step 2: Convert to fraction form
   142,456.62/213,696.18 = 47,687.38/x
3. Step 3: Cross multiply
   142,456.62x = 213,696.18 × 47,687.38
4. Step 4: Simplify right side
   142,456.62x = 10,190,610,940.21
5. Step 5: Solve for x
   x = 10,190,610,940.21/142,456.62
6. Step 6: Final answer
   x = 71,534.84