Finding the Fourth Proportional to 82,290.86, 123,440.89 and 23,121.91

Step by Step Solution

1. Step 1: Write the proportion equation
   82,290.86 : 123,440.89 = 23,121.91 : x
2. Step 2: Convert to fraction form
   82,290.86/123,440.89 = 23,121.91/x
3. Step 3: Cross multiply
   82,290.86x = 123,440.89 × 23,121.91
4. Step 4: Simplify right side
   82,290.86x = 2,854,189,148.90
5. Step 5: Solve for x
   x = 2,854,189,148.90/82,290.86
6. Step 6: Final answer
   x = 34,684.16