Finding the Fourth Proportional to 76,562.89, 105,657.12 and 42,574.48

Step by Step Solution

1. Step 1: Write the proportion equation
   76,562.89 : 105,657.12 = 42,574.48 : x
2. Step 2: Convert to fraction form
   76,562.89/105,657.12 = 42,574.48/x
3. Step 3: Cross multiply
   76,562.89x = 105,657.12 × 42,574.48
4. Step 4: Simplify right side
   76,562.89x = 4,498,296,942.30
5. Step 5: Solve for x
   x = 4,498,296,942.30/76,562.89
6. Step 6: Final answer
   x = 58,752.97