Finding the Fourth Proportional to 105,915.15, 158,795.76 and 49,726.35

Step by Step Solution

1. Step 1: Write the proportion equation
   105,915.15 : 158,795.76 = 49,726.35 : x
2. Step 2: Convert to fraction form
   105,915.15/158,795.76 = 49,726.35/x
3. Step 3: Cross multiply
   105,915.15x = 158,795.76 × 49,726.35
4. Step 4: Simplify right side
   105,915.15x = 7,896,333,540.28
5. Step 5: Solve for x
   x = 7,896,333,540.28/105,915.15
6. Step 6: Final answer
   x = 74,553.39