Finding the Fourth Proportional to 142,282.81, 213,421.78 and 42,443.29

Step by Step Solution

1. Step 1: Write the proportion equation
   142,282.81 : 213,421.78 = 42,443.29 : x
2. Step 2: Convert to fraction form
   142,282.81/213,421.78 = 42,443.29/x
3. Step 3: Cross multiply
   142,282.81x = 213,421.78 × 42,443.29
4. Step 4: Simplify right side
   142,282.81x = 9,058,322,500.86
5. Step 5: Solve for x
   x = 9,058,322,500.86/142,282.81
6. Step 6: Final answer
   x = 63,664.21