Finding the Fourth Proportional to 82,543.86, 123,816.33 and 20,214.36

Step by Step Solution

1. Step 1: Write the proportion equation
   82,543.86 : 123,816.33 = 20,214.36 : x
2. Step 2: Convert to fraction form
   82,543.86/123,816.33 = 20,214.36/x
3. Step 3: Cross multiply
   82,543.86x = 123,816.33 × 20,214.36
4. Step 4: Simplify right side
   82,543.86x = 2,502,867,868.50
5. Step 5: Solve for x
   x = 2,502,867,868.50/82,543.86
6. Step 6: Final answer
   x = 30,321.67