Finding the Fourth Proportional to 82,315.95, 123,477.39 and 40,145.79

Step by Step Solution

1. Step 1: Write the proportion equation
   82,315.95 : 123,477.39 = 40,145.79 : x
2. Step 2: Convert to fraction form
   82,315.95/123,477.39 = 40,145.79/x
3. Step 3: Cross multiply
   82,315.95x = 123,477.39 × 40,145.79
4. Step 4: Simplify right side
   82,315.95x = 4,957,097,368.69
5. Step 5: Solve for x
   x = 4,957,097,368.69/82,315.95
6. Step 6: Final answer
   x = 60,220.37