Finding the Fourth Proportional to 142,066.71, 213,135.30 and 42,226.72

Step by Step Solution

1. Step 1: Write the proportion equation
   142,066.71 : 213,135.30 = 42,226.72 : x
2. Step 2: Convert to fraction form
   142,066.71/213,135.30 = 42,226.72/x
3. Step 3: Cross multiply
   142,066.71x = 213,135.30 × 42,226.72
4. Step 4: Simplify right side
   142,066.71x = 9,000,004,102.38
5. Step 5: Solve for x
   x = 9,000,004,102.38/142,066.71
6. Step 6: Final answer
   x = 63,350.55