Finding the Fourth Proportional to 160,789.32, 221,874.62 and 89,169.12

Step by Step Solution

1. Step 1: Write the proportion equation
   160,789.32 : 221,874.62 = 89,169.12 : x
2. Step 2: Convert to fraction form
   160,789.32/221,874.62 = 89,169.12/x
3. Step 3: Cross multiply
   160,789.32x = 221,874.62 × 89,169.12
4. Step 4: Simplify right side
   160,789.32x = 19,784,364,169.89
5. Step 5: Solve for x
   x = 19,784,364,169.89/160,789.32
6. Step 6: Final answer
   x = 123,045.26