Finding the Fourth Proportional to 82,800.72, 114,398.60 and 57,762

Step by Step Solution

1. Step 1: Write the proportion equation
   82,800.72 : 114,398.60 = 57,762 : x
2. Step 2: Convert to fraction form
   82,800.72/114,398.60 = 57,762/x
3. Step 3: Cross multiply
   82,800.72x = 114,398.60 × 57,762
4. Step 4: Simplify right side
   82,800.72x = 6,607,891,933.20
5. Step 5: Solve for x
   x = 6,607,891,933.20/82,800.72
6. Step 6: Final answer
   x = 79,804.76