Finding the Fourth Proportional to 115,998.88, 160,089.69 and 65,020.27

Step by Step Solution

1. Step 1: Write the proportion equation
   115,998.88 : 160,089.69 = 65,020.27 : x
2. Step 2: Convert to fraction form
   115,998.88/160,089.69 = 65,020.27/x
3. Step 3: Cross multiply
   115,998.88x = 160,089.69 × 65,020.27
4. Step 4: Simplify right side
   115,998.88x = 10,409,074,868.02
5. Step 5: Solve for x
   x = 10,409,074,868.02/115,998.88
6. Step 6: Final answer
   x = 89,734.27