Finding the Fourth Proportional to 83,910.78, 125,866.50 and 33,991.82

Step by Step Solution

1. Step 1: Write the proportion equation
   83,910.78 : 125,866.50 = 33,991.82 : x
2. Step 2: Convert to fraction form
   83,910.78/125,866.50 = 33,991.82/x
3. Step 3: Cross multiply
   83,910.78x = 125,866.50 × 33,991.82
4. Step 4: Simplify right side
   83,910.78x = 4,278,431,412.03
5. Step 5: Solve for x
   x = 4,278,431,412.03/83,910.78
6. Step 6: Final answer
   x = 50,987.86