Finding the Fourth Proportional to 160,635.64, 221,678.49 and 89,016.86

Step by Step Solution

1. Step 1: Write the proportion equation
   160,635.64 : 221,678.49 = 89,016.86 : x
2. Step 2: Convert to fraction form
   160,635.64/221,678.49 = 89,016.86/x
3. Step 3: Cross multiply
   160,635.64x = 221,678.49 × 89,016.86
4. Step 4: Simplify right side
   160,635.64x = 19,733,123,109.34
5. Step 5: Solve for x
   x = 19,733,123,109.34/160,635.64
6. Step 6: Final answer
   x = 122,843.99