Finding the Fourth Proportional to 160,673.72, 221,721.72 and 89,053.10

Step by Step Solution

1. Step 1: Write the proportion equation
   160,673.72 : 221,721.72 = 89,053.10 : x
2. Step 2: Convert to fraction form
   160,673.72/221,721.72 = 89,053.10/x
3. Step 3: Cross multiply
   160,673.72x = 221,721.72 × 89,053.10
4. Step 4: Simplify right side
   160,673.72x = 19,745,006,503.33
5. Step 5: Solve for x
   x = 19,745,006,503.33/160,673.72
6. Step 6: Final answer
   x = 122,888.84