Finding the Fourth Proportional to 76,789.68, 105,967.08 and 42,797.04

Step by Step Solution

1. Step 1: Write the proportion equation
   76,789.68 : 105,967.08 = 42,797.04 : x
2. Step 2: Convert to fraction form
   76,789.68/105,967.08 = 42,797.04/x
3. Step 3: Cross multiply
   76,789.68x = 105,967.08 × 42,797.04
4. Step 4: Simplify right side
   76,789.68x = 4,535,077,361.44
5. Step 5: Solve for x
   x = 4,535,077,361.44/76,789.68
6. Step 6: Final answer
   x = 59,058.42