Finding the Fourth Proportional to 142,100.05, 213,183.42 and 42,261.07

Step by Step Solution

1. Step 1: Write the proportion equation
   142,100.05 : 213,183.42 = 42,261.07 : x
2. Step 2: Convert to fraction form
   142,100.05/213,183.42 = 42,261.07/x
3. Step 3: Cross multiply
   142,100.05x = 213,183.42 × 42,261.07
4. Step 4: Simplify right side
   142,100.05x = 9,009,359,435.46
5. Step 5: Solve for x
   x = 9,009,359,435.46/142,100.05
6. Step 6: Final answer
   x = 63,401.52