Finding the Fourth Proportional to 105,542.54, 145,648.62 and 57,796.82

Step by Step Solution

1. Step 1: Write the proportion equation
   105,542.54 : 145,648.62 = 57,796.82 : x
2. Step 2: Convert to fraction form
   105,542.54/145,648.62 = 57,796.82/x
3. Step 3: Cross multiply
   105,542.54x = 145,648.62 × 57,796.82
4. Step 4: Simplify right side
   105,542.54x = 8,418,027,073.39
5. Step 5: Solve for x
   x = 8,418,027,073.39/105,542.54
6. Step 6: Final answer
   x = 79,759.56