Finding the Fourth Proportional to 81,731.34, 122,596.80 and 21,759.82

Step by Step Solution

1. Step 1: Write the proportion equation
   81,731.34 : 122,596.80 = 21,759.82 : x
2. Step 2: Convert to fraction form
   81,731.34/122,596.80 = 21,759.82/x
3. Step 3: Cross multiply
   81,731.34x = 122,596.80 × 21,759.82
4. Step 4: Simplify right side
   81,731.34x = 2,667,684,300.58
5. Step 5: Solve for x
   x = 2,667,684,300.58/81,731.34
6. Step 6: Final answer
   x = 32,639.67