Finding the Fourth Proportional to 68,678.72, 103,016.16 and 21,934.40

Step by Step Solution

1. Step 1: Write the proportion equation
   68,678.72 : 103,016.16 = 21,934.40 : x
2. Step 2: Convert to fraction form
   68,678.72/103,016.16 = 21,934.40/x
3. Step 3: Cross multiply
   68,678.72x = 103,016.16 × 21,934.40
4. Step 4: Simplify right side
   68,678.72x = 2,259,597,659.90
5. Step 5: Solve for x
   x = 2,259,597,659.90/68,678.72
6. Step 6: Final answer
   x = 32,900.99