Finding the Fourth Proportional to 82,482.36, 123,722.47 and 20,153.40

Step by Step Solution

1. Step 1: Write the proportion equation
   82,482.36 : 123,722.47 = 20,153.40 : x
2. Step 2: Convert to fraction form
   82,482.36/123,722.47 = 20,153.40/x
3. Step 3: Cross multiply
   82,482.36x = 123,722.47 × 20,153.40
4. Step 4: Simplify right side
   82,482.36x = 2,493,428,802.69
5. Step 5: Solve for x
   x = 2,493,428,802.69/82,482.36
6. Step 6: Final answer
   x = 30,229.84