Finding the Fourth Proportional to 105,749.20, 158,638.38 and 61,396.84

Step by Step Solution

1. Step 1: Write the proportion equation
   105,749.20 : 158,638.38 = 61,396.84 : x
2. Step 2: Convert to fraction form
   105,749.20/158,638.38 = 61,396.84/x
3. Step 3: Cross multiply
   105,749.20x = 158,638.38 × 61,396.84
4. Step 4: Simplify right side
   105,749.20x = 9,739,895,234.72
5. Step 5: Solve for x
   x = 9,739,895,234.72/105,749.20
6. Step 6: Final answer
   x = 92,103.72