Finding the Fourth Proportional to 142,120.86, 213,161.85 and 42,296.46

Step by Step Solution

1. Step 1: Write the proportion equation
   142,120.86 : 213,161.85 = 42,296.46 : x
2. Step 2: Convert to fraction form
   142,120.86/213,161.85 = 42,296.46/x
3. Step 3: Cross multiply
   142,120.86x = 213,161.85 × 42,296.46
4. Step 4: Simplify right side
   142,120.86x = 9,015,991,662.05
5. Step 5: Solve for x
   x = 9,015,991,662.05/142,120.86
6. Step 6: Final answer
   x = 63,438.90