Finding the Fourth Proportional to 55,147.41, 82,680.78 and 17,686.16

Step by Step Solution

1. Step 1: Write the proportion equation
   55,147.41 : 82,680.78 = 17,686.16 : x
2. Step 2: Convert to fraction form
   55,147.41/82,680.78 = 17,686.16/x
3. Step 3: Cross multiply
   55,147.41x = 82,680.78 × 17,686.16
4. Step 4: Simplify right side
   55,147.41x = 1,462,305,090.60
5. Step 5: Solve for x
   x = 1,462,305,090.60/55,147.41
6. Step 6: Final answer
   x = 26,516.30