Finding the Fourth Proportional to 115,989.93, 160,061.27 and 65,688.93

Step by Step Solution

1. Step 1: Write the proportion equation
   115,989.93 : 160,061.27 = 65,688.93 : x
2. Step 2: Convert to fraction form
   115,989.93/160,061.27 = 65,688.93/x
3. Step 3: Cross multiply
   115,989.93x = 160,061.27 × 65,688.93
4. Step 4: Simplify right side
   115,989.93x = 10,514,253,232.30
5. Step 5: Solve for x
   x = 10,514,253,232.30/115,989.93
6. Step 6: Final answer
   x = 90,647.98