Finding the Fourth Proportional to 105,148.25, 145,091.81 and 59,831.99

Step by Step Solution

1. Step 1: Write the proportion equation
   105,148.25 : 145,091.81 = 59,831.99 : x
2. Step 2: Convert to fraction form
   105,148.25/145,091.81 = 59,831.99/x
3. Step 3: Cross multiply
   105,148.25x = 145,091.81 × 59,831.99
4. Step 4: Simplify right side
   105,148.25x = 8,681,131,149.12
5. Step 5: Solve for x
   x = 8,681,131,149.12/105,148.25
6. Step 6: Final answer
   x = 82,560.88