Finding the Fourth Proportional to 82,510.29, 123,648.80 and 40,986.45

Step by Step Solution

1. Step 1: Write the proportion equation
   82,510.29 : 123,648.80 = 40,986.45 : x
2. Step 2: Convert to fraction form
   82,510.29/123,648.80 = 40,986.45/x
3. Step 3: Cross multiply
   82,510.29x = 123,648.80 × 40,986.45
4. Step 4: Simplify right side
   82,510.29x = 5,067,925,153.83
5. Step 5: Solve for x
   x = 5,067,925,153.83/82,510.29
6. Step 6: Final answer
   x = 61,421.73