Finding the Fourth Proportional to 67,786.52, 101,659.25 and 20,389.02

Step by Step Solution

1. Step 1: Write the proportion equation
   67,786.52 : 101,659.25 = 20,389.02 : x
2. Step 2: Convert to fraction form
   67,786.52/101,659.25 = 20,389.02/x
3. Step 3: Cross multiply
   67,786.52x = 101,659.25 × 20,389.02
4. Step 4: Simplify right side
   67,786.52x = 2,072,732,379.49
5. Step 5: Solve for x
   x = 2,072,732,379.49/67,786.52
6. Step 6: Final answer
   x = 30,577.36