Finding the Fourth Proportional to 67,499.10, 101,229.30 and 20,112.21

Step by Step Solution

1. Step 1: Write the proportion equation
   67,499.10 : 101,229.30 = 20,112.21 : x
2. Step 2: Convert to fraction form
   67,499.10/101,229.30 = 20,112.21/x
3. Step 3: Cross multiply
   67,499.10x = 101,229.30 × 20,112.21
4. Step 4: Simplify right side
   67,499.10x = 2,035,944,939.75
5. Step 5: Solve for x
   x = 2,035,944,939.75/67,499.10
6. Step 6: Final answer
   x = 30,162.55