Finding the Fourth Proportional to 76,456.37, 105,509.79 and 42,922.37

Step by Step Solution

1. Step 1: Write the proportion equation
   76,456.37 : 105,509.79 = 42,922.37 : x
2. Step 2: Convert to fraction form
   76,456.37/105,509.79 = 42,922.37/x
3. Step 3: Cross multiply
   76,456.37x = 105,509.79 × 42,922.37
4. Step 4: Simplify right side
   76,456.37x = 4,528,729,502.84
5. Step 5: Solve for x
   x = 4,528,729,502.84/76,456.37
6. Step 6: Final answer
   x = 59,232.86