Finding the Fourth Proportional to 72,188.82, 108,261.42 and 21,591.24

Step by Step Solution

1. Step 1: Write the proportion equation
   72,188.82 : 108,261.42 = 21,591.24 : x
2. Step 2: Convert to fraction form
   72,188.82/108,261.42 = 21,591.24/x
3. Step 3: Cross multiply
   72,188.82x = 108,261.42 × 21,591.24
4. Step 4: Simplify right side
   72,188.82x = 2,337,498,301.96
5. Step 5: Solve for x
   x = 2,337,498,301.96/72,188.82
6. Step 6: Final answer
   x = 32,380.34