Finding the Fourth Proportional to 56,986.56, 78,636.15 and 33,112.89

Step by Step Solution

1. Step 1: Write the proportion equation
   56,986.56 : 78,636.15 = 33,112.89 : x
2. Step 2: Convert to fraction form
   56,986.56/78,636.15 = 33,112.89/x
3. Step 3: Cross multiply
   56,986.56x = 78,636.15 × 33,112.89
4. Step 4: Simplify right side
   56,986.56x = 2,603,870,184.97
5. Step 5: Solve for x
   x = 2,603,870,184.97/56,986.56
6. Step 6: Final answer
   x = 45,692.71