Finding the Fourth Proportional to 107,835.02, 148,765.38 and 64,831.31

Step by Step Solution

1. Step 1: Write the proportion equation
   107,835.02 : 148,765.38 = 64,831.31 : x
2. Step 2: Convert to fraction form
   107,835.02/148,765.38 = 64,831.31/x
3. Step 3: Cross multiply
   107,835.02x = 148,765.38 × 64,831.31
4. Step 4: Simplify right side
   107,835.02x = 9,644,654,468.05
5. Step 5: Solve for x
   x = 9,644,654,468.05/107,835.02
6. Step 6: Final answer
   x = 89,438.98