Finding the Fourth Proportional to 115,997.67, 160,089.62 and 65,018.70

Step by Step Solution

1. Step 1: Write the proportion equation
   115,997.67 : 160,089.62 = 65,018.70 : x
2. Step 2: Convert to fraction form
   115,997.67/160,089.62 = 65,018.70/x
3. Step 3: Cross multiply
   115,997.67x = 160,089.62 × 65,018.70
4. Step 4: Simplify right side
   115,997.67x = 10,408,818,650.80
5. Step 5: Solve for x
   x = 10,408,818,650.80/115,997.67
6. Step 6: Final answer
   x = 89,733.00