Finding the Fourth Proportional to 142,083.55, 213,160.40 and 42,243.31

Step by Step Solution

1. Step 1: Write the proportion equation
   142,083.55 : 213,160.40 = 42,243.31 : x
2. Step 2: Convert to fraction form
   142,083.55/213,160.40 = 42,243.31/x
3. Step 3: Cross multiply
   142,083.55x = 213,160.40 × 42,243.31
4. Step 4: Simplify right side
   142,083.55x = 9,004,599,579.91
5. Step 5: Solve for x
   x = 9,004,599,579.91/142,083.55
6. Step 6: Final answer
   x = 63,375.39