Finding the Fourth Proportional to 82,575.36, 123,863.58 and 20,245.86

Step by Step Solution

1. Step 1: Write the proportion equation
   82,575.36 : 123,863.58 = 20,245.86 : x
2. Step 2: Convert to fraction form
   82,575.36/123,863.58 = 20,245.86/x
3. Step 3: Cross multiply
   82,575.36x = 123,863.58 × 20,245.86
4. Step 4: Simplify right side
   82,575.36x = 2,507,724,699.78
5. Step 5: Solve for x
   x = 2,507,724,699.78/82,575.36
6. Step 6: Final answer
   x = 30,368.92