Finding the Fourth Proportional to 142,259.14, 213,388.71 and 42,489.42

Step by Step Solution

1. Step 1: Write the proportion equation
   142,259.14 : 213,388.71 = 42,489.42 : x
2. Step 2: Convert to fraction form
   142,259.14/213,388.71 = 42,489.42/x
3. Step 3: Cross multiply
   142,259.14x = 213,388.71 × 42,489.42
4. Step 4: Simplify right side
   142,259.14x = 9,066,762,522.45
5. Step 5: Solve for x
   x = 9,066,762,522.45/142,259.14
6. Step 6: Final answer
   x = 63,734.13