Finding the Fourth Proportional to 67,991.97, 101,979.84 and 18,075.72

Step by Step Solution

1. Step 1: Write the proportion equation
   67,991.97 : 101,979.84 = 18,075.72 : x
2. Step 2: Convert to fraction form
   67,991.97/101,979.84 = 18,075.72/x
3. Step 3: Cross multiply
   67,991.97x = 101,979.84 × 18,075.72
4. Step 4: Simplify right side
   67,991.97x = 1,843,359,033.48
5. Step 5: Solve for x
   x = 1,843,359,033.48/67,991.97
6. Step 6: Final answer
   x = 27,111.42