Finding the Fourth Proportional to 67,490.52, 101,249.90 and 20,105.52

Step by Step Solution

1. Step 1: Write the proportion equation
   67,490.52 : 101,249.90 = 20,105.52 : x
2. Step 2: Convert to fraction form
   67,490.52/101,249.90 = 20,105.52/x
3. Step 3: Cross multiply
   67,490.52x = 101,249.90 × 20,105.52
4. Step 4: Simplify right side
   67,490.52x = 2,035,681,788.92
5. Step 5: Solve for x
   x = 2,035,681,788.92/67,490.52
6. Step 6: Final answer
   x = 30,162.48