Finding the Fourth Proportional to 76,836.20, 105,996.27 and 51,348.83

Step by Step Solution

1. Step 1: Write the proportion equation
   76,836.20 : 105,996.27 = 51,348.83 : x
2. Step 2: Convert to fraction form
   76,836.20/105,996.27 = 51,348.83/x
3. Step 3: Cross multiply
   76,836.20x = 105,996.27 × 51,348.83
4. Step 4: Simplify right side
   76,836.20x = 5,442,784,448.86
5. Step 5: Solve for x
   x = 5,442,784,448.86/76,836.20
6. Step 6: Final answer
   x = 70,836.20