Finding the Fourth Proportional to 67,918.39, 101,878.50 and 18,003.31

Step by Step Solution

1. Step 1: Write the proportion equation
   67,918.39 : 101,878.50 = 18,003.31 : x
2. Step 2: Convert to fraction form
   67,918.39/101,878.50 = 18,003.31/x
3. Step 3: Cross multiply
   67,918.39x = 101,878.50 × 18,003.31
4. Step 4: Simplify right side
   67,918.39x = 1,834,150,217.84
5. Step 5: Solve for x
   x = 1,834,150,217.84/67,918.39
6. Step 6: Final answer
   x = 27,005.21