Finding the Fourth Proportional to 76,797.56, 105,967.78 and 42,798.58

Step by Step Solution

1. Step 1: Write the proportion equation
   76,797.56 : 105,967.78 = 42,798.58 : x
2. Step 2: Convert to fraction form
   76,797.56/105,967.78 = 42,798.58/x
3. Step 3: Cross multiply
   76,797.56x = 105,967.78 × 42,798.58
4. Step 4: Simplify right side
   76,797.56x = 4,535,270,509.75
5. Step 5: Solve for x
   x = 4,535,270,509.75/76,797.56
6. Step 6: Final answer
   x = 59,054.88