Finding the Fourth Proportional to 142,086.05, 213,164.15 and 42,245.81

Step by Step Solution

1. Step 1: Write the proportion equation
   142,086.05 : 213,164.15 = 42,245.81 : x
2. Step 2: Convert to fraction form
   142,086.05/213,164.15 = 42,245.81/x
3. Step 3: Cross multiply
   142,086.05x = 213,164.15 × 42,245.81
4. Step 4: Simplify right side
   142,086.05x = 9,005,292,179.71
5. Step 5: Solve for x
   x = 9,005,292,179.71/142,086.05
6. Step 6: Final answer
   x = 63,379.14