Finding the Fourth Proportional to 67,485.20, 101,241.46 and 20,101.10

Step by Step Solution

1. Step 1: Write the proportion equation
   67,485.20 : 101,241.46 = 20,101.10 : x
2. Step 2: Convert to fraction form
   67,485.20/101,241.46 = 20,101.10/x
3. Step 3: Cross multiply
   67,485.20x = 101,241.46 × 20,101.10
4. Step 4: Simplify right side
   67,485.20x = 2,035,064,711.61
5. Step 5: Solve for x
   x = 2,035,064,711.61/67,485.20
6. Step 6: Final answer
   x = 30,155.72