Finding the Fourth Proportional to 55,284.12, 82,961.69 and 55,080

Step by Step Solution

1. Step 1: Write the proportion equation
   55,284.12 : 82,961.69 = 55,080 : x
2. Step 2: Convert to fraction form
   55,284.12/82,961.69 = 55,080/x
3. Step 3: Cross multiply
   55,284.12x = 82,961.69 × 55,080
4. Step 4: Simplify right side
   55,284.12x = 4,569,529,609.80
5. Step 5: Solve for x
   x = 4,569,529,609.80/55,284.12
6. Step 6: Final answer
   x = 82,655.37