Finding the Fourth Proportional to 65,145.76, 97,724.12 and 20,778.82

Step by Step Solution

1. Step 1: Write the proportion equation
   65,145.76 : 97,724.12 = 20,778.82 : x
2. Step 2: Convert to fraction form
   65,145.76/97,724.12 = 20,778.82/x
3. Step 3: Cross multiply
   65,145.76x = 97,724.12 × 20,778.82
4. Step 4: Simplify right side
   65,145.76x = 2,030,591,899.14
5. Step 5: Solve for x
   x = 2,030,591,899.14/65,145.76
6. Step 6: Final answer
   x = 31,169.98