Finding the Fourth Proportional to 105.83, 158.58 and 47.98

Step by Step Solution

1. Step 1: Write the proportion equation
   105.83 : 158.58 = 47.98 : x
2. Step 2: Convert to fraction form
   105.83/158.58 = 47.98/x
3. Step 3: Cross multiply
   105.83x = 158.58 × 47.98
4. Step 4: Simplify right side
   105.83x = 7,608.67
5. Step 5: Solve for x
   x = 7,608.67/105.83
6. Step 6: Final answer
   x = 71.90