Finding the Fourth Proportional to 76,568.98, 105,665.28 and 42,576.74

Step by Step Solution

1. Step 1: Write the proportion equation
   76,568.98 : 105,665.28 = 42,576.74 : x
2. Step 2: Convert to fraction form
   76,568.98/105,665.28 = 42,576.74/x
3. Step 3: Cross multiply
   76,568.98x = 105,665.28 × 42,576.74
4. Step 4: Simplify right side
   76,568.98x = 4,498,883,339.05
5. Step 5: Solve for x
   x = 4,498,883,339.05/76,568.98
6. Step 6: Final answer
   x = 58,755.95