Finding the Fourth Proportional to 160,680, 221,719.04 and 89,061.12

Step by Step Solution

1. Step 1: Write the proportion equation
   160,680 : 221,719.04 = 89,061.12 : x
2. Step 2: Convert to fraction form
   160,680/221,719.04 = 89,061.12/x
3. Step 3: Cross multiply
   160,680x = 221,719.04 × 89,061.12
4. Step 4: Simplify right side
   160,680x = 19,746,546,027.72
5. Step 5: Solve for x
   x = 19,746,546,027.72/160,680
6. Step 6: Final answer
   x = 122,893.61