Finding the Fourth Proportional to 142,065.12, 213,023.52 and 42,211.56

Step by Step Solution

1. Step 1: Write the proportion equation
   142,065.12 : 213,023.52 = 42,211.56 : x
2. Step 2: Convert to fraction form
   142,065.12/213,023.52 = 42,211.56/x
3. Step 3: Cross multiply
   142,065.12x = 213,023.52 × 42,211.56
4. Step 4: Simplify right side
   142,065.12x = 8,992,055,095.89
5. Step 5: Solve for x
   x = 8,992,055,095.89/142,065.12
6. Step 6: Final answer
   x = 63,295.30