Finding the Fourth Proportional to 142,390.38, 213,628.45 and 42,553.83

Step by Step Solution

1. Step 1: Write the proportion equation
   142,390.38 : 213,628.45 = 42,553.83 : x
2. Step 2: Convert to fraction form
   142,390.38/213,628.45 = 42,553.83/x
3. Step 3: Cross multiply
   142,390.38x = 213,628.45 × 42,553.83
4. Step 4: Simplify right side
   142,390.38x = 9,090,708,744.46
5. Step 5: Solve for x
   x = 9,090,708,744.46/142,390.38
6. Step 6: Final answer
   x = 63,843.56