Finding the Fourth Proportional to 67,659, 101,498.20 and 20,915.52

Step by Step Solution

1. Step 1: Write the proportion equation
   67,659 : 101,498.20 = 20,915.52 : x
2. Step 2: Convert to fraction form
   67,659/101,498.20 = 20,915.52/x
3. Step 3: Cross multiply
   67,659x = 101,498.20 × 20,915.52
4. Step 4: Simplify right side
   67,659x = 2,122,887,632.06
5. Step 5: Solve for x
   x = 2,122,887,632.06/67,659
6. Step 6: Final answer
   x = 31,376.28