Finding the Fourth Proportional to 76,767.88, 105,939.42 and 42,777.82

Step by Step Solution

1. Step 1: Write the proportion equation
   76,767.88 : 105,939.42 = 42,777.82 : x
2. Step 2: Convert to fraction form
   76,767.88/105,939.42 = 42,777.82/x
3. Step 3: Cross multiply
   76,767.88x = 105,939.42 × 42,777.82
4. Step 4: Simplify right side
   76,767.88x = 4,531,857,439.66
5. Step 5: Solve for x
   x = 4,531,857,439.66/76,767.88
6. Step 6: Final answer
   x = 59,033.25