Finding the Fourth Proportional to 82,020.31, 112,449.82 and 80,525.64

Step by Step Solution

1. Step 1: Write the proportion equation
   82,020.31 : 112,449.82 = 80,525.64 : x
2. Step 2: Convert to fraction form
   82,020.31/112,449.82 = 80,525.64/x
3. Step 3: Cross multiply
   82,020.31x = 112,449.82 × 80,525.64
4. Step 4: Simplify right side
   82,020.31x = 9,055,093,723.38
5. Step 5: Solve for x
   x = 9,055,093,723.38/82,020.31
6. Step 6: Final answer
   x = 110,400.63