Finding the Fourth Proportional to 55,145.78, 82,678.34 and 17,684.53

Step by Step Solution

1. Step 1: Write the proportion equation
   55,145.78 : 82,678.34 = 17,684.53 : x
2. Step 2: Convert to fraction form
   55,145.78/82,678.34 = 17,684.53/x
3. Step 3: Cross multiply
   55,145.78x = 82,678.34 × 17,684.53
4. Step 4: Simplify right side
   55,145.78x = 1,462,127,170.69
5. Step 5: Solve for x
   x = 1,462,127,170.69/55,145.78
6. Step 6: Final answer
   x = 26,513.86