Finding the Fourth Proportional to 160,726.89, 221,788.17 and 89,100.84

Step by Step Solution

1. Step 1: Write the proportion equation
   160,726.89 : 221,788.17 = 89,100.84 : x
2. Step 2: Convert to fraction form
   160,726.89/221,788.17 = 89,100.84/x
3. Step 3: Cross multiply
   160,726.89x = 221,788.17 × 89,100.84
4. Step 4: Simplify right side
   160,726.89x = 19,761,512,249.06
5. Step 5: Solve for x
   x = 19,761,512,249.06/160,726.89
6. Step 6: Final answer
   x = 122,950.88