Finding the Fourth Proportional to 160,826.58, 221,940.54 and 89,207.10

Step by Step Solution

1. Step 1: Write the proportion equation
   160,826.58 : 221,940.54 = 89,207.10 : x
2. Step 2: Convert to fraction form
   160,826.58/221,940.54 = 89,207.10/x
3. Step 3: Cross multiply
   160,826.58x = 221,940.54 × 89,207.10
4. Step 4: Simplify right side
   160,826.58x = 19,798,671,945.83
5. Step 5: Solve for x
   x = 19,798,671,945.83/160,826.58
6. Step 6: Final answer
   x = 123,105.72