Finding the Fourth Proportional to 55,142.36, 82,740.89 and 21,861.69

Step by Step Solution

1. Step 1: Write the proportion equation
   55,142.36 : 82,740.89 = 21,861.69 : x
2. Step 2: Convert to fraction form
   55,142.36/82,740.89 = 21,861.69/x
3. Step 3: Cross multiply
   55,142.36x = 82,740.89 × 21,861.69
4. Step 4: Simplify right side
   55,142.36x = 1,808,855,742.16
5. Step 5: Solve for x
   x = 1,808,855,742.16/55,142.36
6. Step 6: Final answer
   x = 32,803.38