Finding the Fourth Proportional to 142,238.79, 213,358.08 and 42,396.42

Step by Step Solution

1. Step 1: Write the proportion equation
   142,238.79 : 213,358.08 = 42,396.42 : x
2. Step 2: Convert to fraction form
   142,238.79/213,358.08 = 42,396.42/x
3. Step 3: Cross multiply
   142,238.79x = 213,358.08 × 42,396.42
4. Step 4: Simplify right side
   142,238.79x = 9,045,618,770.07
5. Step 5: Solve for x
   x = 9,045,618,770.07/142,238.79
6. Step 6: Final answer
   x = 63,594.60