Finding the Fourth Proportional to 81,950.30, 122,934.96 and 28,625.78

Step by Step Solution

1. Step 1: Write the proportion equation
   81,950.30 : 122,934.96 = 28,625.78 : x
2. Step 2: Convert to fraction form
   81,950.30/122,934.96 = 28,625.78/x
3. Step 3: Cross multiply
   81,950.30x = 122,934.96 × 28,625.78
4. Step 4: Simplify right side
   81,950.30x = 3,519,108,504.59
5. Step 5: Solve for x
   x = 3,519,108,504.59/81,950.30
6. Step 6: Final answer
   x = 42,941.99