Finding the Fourth Proportional to 45,678.56, 68,556.72 and 17,996

Step by Step Solution

1. Step 1: Write the proportion equation
   45,678.56 : 68,556.72 = 17,996 : x
2. Step 2: Convert to fraction form
   45,678.56/68,556.72 = 17,996/x
3. Step 3: Cross multiply
   45,678.56x = 68,556.72 × 17,996
4. Step 4: Simplify right side
   45,678.56x = 1,233,746,733.12
5. Step 5: Solve for x
   x = 1,233,746,733.12/45,678.56
6. Step 6: Final answer
   x = 27,009.32