Finding the Fourth Proportional to 82,791.86, 124,149.72 and 26,621.60

Step by Step Solution

1. Step 1: Write the proportion equation
   82,791.86 : 124,149.72 = 26,621.60 : x
2. Step 2: Convert to fraction form
   82,791.86/124,149.72 = 26,621.60/x
3. Step 3: Cross multiply
   82,791.86x = 124,149.72 × 26,621.60
4. Step 4: Simplify right side
   82,791.86x = 3,305,064,185.95
5. Step 5: Solve for x
   x = 3,305,064,185.95/82,791.86
6. Step 6: Final answer
   x = 39,920.16