Finding the Fourth Proportional to 82,692.62, 123,940.51 and 57,596.80

Step by Step Solution

1. Step 1: Write the proportion equation
   82,692.62 : 123,940.51 = 57,596.80 : x
2. Step 2: Convert to fraction form
   82,692.62/123,940.51 = 57,596.80/x
3. Step 3: Cross multiply
   82,692.62x = 123,940.51 × 57,596.80
4. Step 4: Simplify right side
   82,692.62x = 7,138,576,520.31
5. Step 5: Solve for x
   x = 7,138,576,520.31/82,692.62
6. Step 6: Final answer
   x = 86,326.64