Finding the Fourth Proportional to 82,407.47, 123,616.43 and 31,830.63

Step by Step Solution

1. Step 1: Write the proportion equation
   82,407.47 : 123,616.43 = 31,830.63 : x
2. Step 2: Convert to fraction form
   82,407.47/123,616.43 = 31,830.63/x
3. Step 3: Cross multiply
   82,407.47x = 123,616.43 × 31,830.63
4. Step 4: Simplify right side
   82,407.47x = 3,934,788,686.10
5. Step 5: Solve for x
   x = 3,934,788,686.10/82,407.47
6. Step 6: Final answer
   x = 47,747.96