Finding the Fourth Proportional to 83,976.75, 125,972.42 and 21,647.25

Step by Step Solution

1. Step 1: Write the proportion equation
   83,976.75 : 125,972.42 = 21,647.25 : x
2. Step 2: Convert to fraction form
   83,976.75/125,972.42 = 21,647.25/x
3. Step 3: Cross multiply
   83,976.75x = 125,972.42 × 21,647.25
4. Step 4: Simplify right side
   83,976.75x = 2,726,956,360.61
5. Step 5: Solve for x
   x = 2,726,956,360.61/83,976.75
6. Step 6: Final answer
   x = 32,472.75