Finding the Fourth Proportional to 67,186.69, 100,812.84 and 42,238.49

Step by Step Solution

1. Step 1: Write the proportion equation
   67,186.69 : 100,812.84 = 42,238.49 : x
2. Step 2: Convert to fraction form
   67,186.69/100,812.84 = 42,238.49/x
3. Step 3: Cross multiply
   67,186.69x = 100,812.84 × 42,238.49
4. Step 4: Simplify right side
   67,186.69x = 4,258,181,933.48
5. Step 5: Solve for x
   x = 4,258,181,933.48/67,186.69
6. Step 6: Final answer
   x = 63,378.36