Finding the Fourth Proportional to 76,653.27, 105,752.05 and 56,558.05

Step by Step Solution

1. Step 1: Write the proportion equation
   76,653.27 : 105,752.05 = 56,558.05 : x
2. Step 2: Convert to fraction form
   76,653.27/105,752.05 = 56,558.05/x
3. Step 3: Cross multiply
   76,653.27x = 105,752.05 × 56,558.05
4. Step 4: Simplify right side
   76,653.27x = 5,981,129,325.73
5. Step 5: Solve for x
   x = 5,981,129,325.73/76,653.27
6. Step 6: Final answer
   x = 78,028.36