Finding the Fourth Proportional to 45,409.68, 68,016.06 and 21,987

Step by Step Solution

1. Step 1: Write the proportion equation
   45,409.68 : 68,016.06 = 21,987 : x
2. Step 2: Convert to fraction form
   45,409.68/68,016.06 = 21,987/x
3. Step 3: Cross multiply
   45,409.68x = 68,016.06 × 21,987
4. Step 4: Simplify right side
   45,409.68x = 1,495,469,111.22
5. Step 5: Solve for x
   x = 1,495,469,111.22/45,409.68
6. Step 6: Final answer
   x = 32,932.83