Finding the Fourth Proportional to 160,404.96, 221,353.20 and 88,785.12

Step by Step Solution

1. Step 1: Write the proportion equation
   160,404.96 : 221,353.20 = 88,785.12 : x
2. Step 2: Convert to fraction form
   160,404.96/221,353.20 = 88,785.12/x
3. Step 3: Cross multiply
   160,404.96x = 221,353.20 × 88,785.12
4. Step 4: Simplify right side
   160,404.96x = 19,652,870,424.38
5. Step 5: Solve for x
   x = 19,652,870,424.38/160,404.96
6. Step 6: Final answer
   x = 122,520.34