Finding the Fourth Proportional to 82,131.40, 123,197.12 and 28,865.19

Step by Step Solution

1. Step 1: Write the proportion equation
   82,131.40 : 123,197.12 = 28,865.19 : x
2. Step 2: Convert to fraction form
   82,131.40/123,197.12 = 28,865.19/x
3. Step 3: Cross multiply
   82,131.40x = 123,197.12 × 28,865.19
4. Step 4: Simplify right side
   82,131.40x = 3,556,108,702.16
5. Step 5: Solve for x
   x = 3,556,108,702.16/82,131.40
6. Step 6: Final answer
   x = 43,297.80