Finding the Fourth Proportional to 105,786.25, 158,677.71 and 42,604.89

Step by Step Solution

1. Step 1: Write the proportion equation
   105,786.25 : 158,677.71 = 42,604.89 : x
2. Step 2: Convert to fraction form
   105,786.25/158,677.71 = 42,604.89/x
3. Step 3: Cross multiply
   105,786.25x = 158,677.71 × 42,604.89
4. Step 4: Simplify right side
   105,786.25x = 6,760,445,745.02
5. Step 5: Solve for x
   x = 6,760,445,745.02/105,786.25
6. Step 6: Final answer
   x = 63,906.66