Finding the Fourth Proportional to 72,391.97, 108,548.49 and 21,783.59

Step by Step Solution

1. Step 1: Write the proportion equation
   72,391.97 : 108,548.49 = 21,783.59 : x
2. Step 2: Convert to fraction form
   72,391.97/108,548.49 = 21,783.59/x
3. Step 3: Cross multiply
   72,391.97x = 108,548.49 × 21,783.59
4. Step 4: Simplify right side
   72,391.97x = 2,364,576,235.33
5. Step 5: Solve for x
   x = 2,364,576,235.33/72,391.97
6. Step 6: Final answer
   x = 32,663.51