Finding the Fourth Proportional to 76,765.25, 105,943.83 and 42,779.27

Step by Step Solution

1. Step 1: Write the proportion equation
   76,765.25 : 105,943.83 = 42,779.27 : x
2. Step 2: Convert to fraction form
   76,765.25/105,943.83 = 42,779.27/x
3. Step 3: Cross multiply
   76,765.25x = 105,943.83 × 42,779.27
4. Step 4: Simplify right side
   76,765.25x = 4,532,199,178.68
5. Step 5: Solve for x
   x = 4,532,199,178.68/76,765.25
6. Step 6: Final answer
   x = 59,039.73