Finding the Fourth Proportional to 80,898.73, 121,339.89 and 21,726.71

Step by Step Solution

1. Step 1: Write the proportion equation
   80,898.73 : 121,339.89 = 21,726.71 : x
2. Step 2: Convert to fraction form
   80,898.73/121,339.89 = 21,726.71/x
3. Step 3: Cross multiply
   80,898.73x = 121,339.89 × 21,726.71
4. Step 4: Simplify right side
   80,898.73x = 2,636,316,601.46
5. Step 5: Solve for x
   x = 2,636,316,601.46/80,898.73
6. Step 6: Final answer
   x = 32,587.86