Finding the Fourth Proportional to 76,817.34, 106,015.77 and 42,831.36

Step by Step Solution

1. Step 1: Write the proportion equation
   76,817.34 : 106,015.77 = 42,831.36 : x
2. Step 2: Convert to fraction form
   76,817.34/106,015.77 = 42,831.36/x
3. Step 3: Cross multiply
   76,817.34x = 106,015.77 × 42,831.36
4. Step 4: Simplify right side
   76,817.34x = 4,540,799,610.55
5. Step 5: Solve for x
   x = 4,540,799,610.55/76,817.34
6. Step 6: Final answer
   x = 59,111.65