Finding the Fourth Proportional to 76,831.89, 106,017.57 and 42,836.19

Step by Step Solution

1. Step 1: Write the proportion equation
   76,831.89 : 106,017.57 = 42,836.19 : x
2. Step 2: Convert to fraction form
   76,831.89/106,017.57 = 42,836.19/x
3. Step 3: Cross multiply
   76,831.89x = 106,017.57 × 42,836.19
4. Step 4: Simplify right side
   76,831.89x = 4,541,388,771.86
5. Step 5: Solve for x
   x = 4,541,388,771.86/76,831.89
6. Step 6: Final answer
   x = 59,108.12