Finding the Fourth Proportional to 72,522.15, 108,783.98 and 21,921.60

Step by Step Solution

1. Step 1: Write the proportion equation
   72,522.15 : 108,783.98 = 21,921.60 : x
2. Step 2: Convert to fraction form
   72,522.15/108,783.98 = 21,921.60/x
3. Step 3: Cross multiply
   72,522.15x = 108,783.98 × 21,921.60
4. Step 4: Simplify right side
   72,522.15x = 2,384,718,863.81
5. Step 5: Solve for x
   x = 2,384,718,863.81/72,522.15
6. Step 6: Final answer
   x = 32,882.63