Finding the Fourth Proportional to 116,018.18, 160,105.08 and 65,717.18

Step by Step Solution

1. Step 1: Write the proportion equation
   116,018.18 : 160,105.08 = 65,717.18 : x
2. Step 2: Convert to fraction form
   116,018.18/160,105.08 = 65,717.18/x
3. Step 3: Cross multiply
   116,018.18x = 160,105.08 × 65,717.18
4. Step 4: Simplify right side
   116,018.18x = 10,521,654,361.27
5. Step 5: Solve for x
   x = 10,521,654,361.27/116,018.18
6. Step 6: Final answer
   x = 90,689.70