Finding the Fourth Proportional to 160,676.16, 221,734.72 and 89,057.76

Step by Step Solution

1. Step 1: Write the proportion equation
   160,676.16 : 221,734.72 = 89,057.76 : x
2. Step 2: Convert to fraction form
   160,676.16/221,734.72 = 89,057.76/x
3. Step 3: Cross multiply
   160,676.16x = 221,734.72 × 89,057.76
4. Step 4: Simplify right side
   160,676.16x = 19,747,197,477.43
5. Step 5: Solve for x
   x = 19,747,197,477.43/160,676.16
6. Step 6: Final answer
   x = 122,900.61