Finding the Fourth Proportional to 82,481.76, 123,722.37 and 56,121.12

Step by Step Solution

1. Step 1: Write the proportion equation
   82,481.76 : 123,722.37 = 56,121.12 : x
2. Step 2: Convert to fraction form
   82,481.76/123,722.37 = 56,121.12/x
3. Step 3: Cross multiply
   82,481.76x = 123,722.37 × 56,121.12
4. Step 4: Simplify right side
   82,481.76x = 6,943,437,973.45
5. Step 5: Solve for x
   x = 6,943,437,973.45/82,481.76
6. Step 6: Final answer
   x = 84,181.50