Finding the Fourth Proportional to 115,988.93, 160,059.89 and 65,687.93

Step by Step Solution

1. Step 1: Write the proportion equation
   115,988.93 : 160,059.89 = 65,687.93 : x
2. Step 2: Convert to fraction form
   115,988.93/160,059.89 = 65,687.93/x
3. Step 3: Cross multiply
   115,988.93x = 160,059.89 × 65,687.93
4. Step 4: Simplify right side
   115,988.93x = 10,514,002,521.69
5. Step 5: Solve for x
   x = 10,514,002,521.69/115,988.93
6. Step 6: Final answer
   x = 90,646.60