Finding the Fourth Proportional to 142,045.20, 213,100.56 and 42,203.16

Step by Step Solution

1. Step 1: Write the proportion equation
   142,045.20 : 213,100.56 = 42,203.16 : x
2. Step 2: Convert to fraction form
   142,045.20/213,100.56 = 42,203.16/x
3. Step 3: Cross multiply
   142,045.20x = 213,100.56 × 42,203.16
4. Step 4: Simplify right side
   142,045.20x = 8,993,517,029.77
5. Step 5: Solve for x
   x = 8,993,517,029.77/142,045.20
6. Step 6: Final answer
   x = 63,314.47