Finding the Fourth Proportional to 142,079.67, 213,154.61 and 42,239.43

Step by Step Solution

1. Step 1: Write the proportion equation
   142,079.67 : 213,154.61 = 42,239.43 : x
2. Step 2: Convert to fraction form
   142,079.67/213,154.61 = 42,239.43/x
3. Step 3: Cross multiply
   142,079.67x = 213,154.61 × 42,239.43
4. Step 4: Simplify right side
   142,079.67x = 9,003,529,017.08
5. Step 5: Solve for x
   x = 9,003,529,017.08/142,079.67
6. Step 6: Final answer
   x = 63,369.58