Finding the Fourth Proportional to 81,520.38, 122,300.82 and 28,935.18

Step by Step Solution

1. Step 1: Write the proportion equation
   81,520.38 : 122,300.82 = 28,935.18 : x
2. Step 2: Convert to fraction form
   81,520.38/122,300.82 = 28,935.18/x
3. Step 3: Cross multiply
   81,520.38x = 122,300.82 × 28,935.18
4. Step 4: Simplify right side
   81,520.38x = 3,538,796,240.85
5. Step 5: Solve for x
   x = 3,538,796,240.85/81,520.38
6. Step 6: Final answer
   x = 43,409.96