Finding the Fourth Proportional to 35,778.10, 49,371.30 and 19,861.30

Step by Step Solution

1. Step 1: Write the proportion equation
   35,778.10 : 49,371.30 = 19,861.30 : x
2. Step 2: Convert to fraction form
   35,778.10/49,371.30 = 19,861.30/x
3. Step 3: Cross multiply
   35,778.10x = 49,371.30 × 19,861.30
4. Step 4: Simplify right side
   35,778.10x = 980,578,200.69
5. Step 5: Solve for x
   x = 980,578,200.69/35,778.10
6. Step 6: Final answer
   x = 27,407.22