Finding the Fourth Proportional to 68,978.60, 103,469.02 and 22,231.72

Step by Step Solution

1. Step 1: Write the proportion equation
   68,978.60 : 103,469.02 = 22,231.72 : x
2. Step 2: Convert to fraction form
   68,978.60/103,469.02 = 22,231.72/x
3. Step 3: Cross multiply
   68,978.60x = 103,469.02 × 22,231.72
4. Step 4: Simplify right side
   68,978.60x = 2,300,294,281.31
5. Step 5: Solve for x
   x = 2,300,294,281.31/68,978.60
6. Step 6: Final answer
   x = 33,347.94