Finding the Fourth Proportional to 67,388.52, 101,102.22 and 20,648.28

Step by Step Solution

1. Step 1: Write the proportion equation
   67,388.52 : 101,102.22 = 20,648.28 : x
2. Step 2: Convert to fraction form
   67,388.52/101,102.22 = 20,648.28/x
3. Step 3: Cross multiply
   67,388.52x = 101,102.22 × 20,648.28
4. Step 4: Simplify right side
   67,388.52x = 2,087,586,947.18
5. Step 5: Solve for x
   x = 2,087,586,947.18/67,388.52
6. Step 6: Final answer
   x = 30,978.38