Finding the Fourth Proportional to 107,687.16, 161,521.50 and 65,556.31

Step by Step Solution

1. Step 1: Write the proportion equation
   107,687.16 : 161,521.50 = 65,556.31 : x
2. Step 2: Convert to fraction form
   107,687.16/161,521.50 = 65,556.31/x
3. Step 3: Cross multiply
   107,687.16x = 161,521.50 × 65,556.31
4. Step 4: Simplify right side
   107,687.16x = 10,588,753,121.86
5. Step 5: Solve for x
   x = 10,588,753,121.86/107,687.16
6. Step 6: Final answer
   x = 98,328.84