Finding the Fourth Proportional to 142,168.57, 213,181.53 and 47,365.40

Step by Step Solution

1. Step 1: Write the proportion equation
   142,168.57 : 213,181.53 = 47,365.40 : x
2. Step 2: Convert to fraction form
   142,168.57/213,181.53 = 47,365.40/x
3. Step 3: Cross multiply
   142,168.57x = 213,181.53 × 47,365.40
4. Step 4: Simplify right side
   142,168.57x = 10,097,428,796.40
5. Step 5: Solve for x
   x = 10,097,428,796.40/142,168.57
6. Step 6: Final answer
   x = 71,024.34