Finding the Fourth Proportional to 76,757.81, 105,933.56 and 42,771.83

Step by Step Solution

1. Step 1: Write the proportion equation
   76,757.81 : 105,933.56 = 42,771.83 : x
2. Step 2: Convert to fraction form
   76,757.81/105,933.56 = 42,771.83/x
3. Step 3: Cross multiply
   76,757.81x = 105,933.56 × 42,771.83
4. Step 4: Simplify right side
   76,757.81x = 4,530,972,219.61
5. Step 5: Solve for x
   x = 4,530,972,219.61/76,757.81
6. Step 6: Final answer
   x = 59,029.46