Finding the Fourth Proportional to 76,752.70, 105,911.49 and 42,757.72

Step by Step Solution

1. Step 1: Write the proportion equation
   76,752.70 : 105,911.49 = 42,757.72 : x
2. Step 2: Convert to fraction form
   76,752.70/105,911.49 = 42,757.72/x
3. Step 3: Cross multiply
   76,752.70x = 105,911.49 × 42,757.72
4. Step 4: Simplify right side
   76,752.70x = 4,528,533,834.20
5. Step 5: Solve for x
   x = 4,528,533,834.20/76,752.70
6. Step 6: Final answer
   x = 59,001.62