Finding the Fourth Proportional to 76,835.20, 105,994.89 and 51,347.83

Step by Step Solution

1. Step 1: Write the proportion equation
   76,835.20 : 105,994.89 = 51,347.83 : x
2. Step 2: Convert to fraction form
   76,835.20/105,994.89 = 51,347.83/x
3. Step 3: Cross multiply
   76,835.20x = 105,994.89 × 51,347.83
4. Step 4: Simplify right side
   76,835.20x = 5,442,607,592.59
5. Step 5: Solve for x
   x = 5,442,607,592.59/76,835.20
6. Step 6: Final answer
   x = 70,834.82