Finding the Fourth Proportional to 105,844.74, 158,765.31 and 49,671.78

Step by Step Solution

1. Step 1: Write the proportion equation
   105,844.74 : 158,765.31 = 49,671.78 : x
2. Step 2: Convert to fraction form
   105,844.74/158,765.31 = 49,671.78/x
3. Step 3: Cross multiply
   105,844.74x = 158,765.31 × 49,671.78
4. Step 4: Simplify right side
   105,844.74x = 7,886,155,549.95
5. Step 5: Solve for x
   x = 7,886,155,549.95/105,844.74
6. Step 6: Final answer
   x = 74,506.83