Finding the Fourth Proportional to 76,571.38, 105,674.25 and 42,585.94

Step by Step Solution

1. Step 1: Write the proportion equation
   76,571.38 : 105,674.25 = 42,585.94 : x
2. Step 2: Convert to fraction form
   76,571.38/105,674.25 = 42,585.94/x
3. Step 3: Cross multiply
   76,571.38x = 105,674.25 × 42,585.94
4. Step 4: Simplify right side
   76,571.38x = 4,500,237,270.05
5. Step 5: Solve for x
   x = 4,500,237,270.05/76,571.38
6. Step 6: Final answer
   x = 58,771.79