Finding the Fourth Proportional to 68,150.72, 102,230.17 and 21,403.60

Step by Step Solution

1. Step 1: Write the proportion equation
   68,150.72 : 102,230.17 = 21,403.60 : x
2. Step 2: Convert to fraction form
   68,150.72/102,230.17 = 21,403.60/x
3. Step 3: Cross multiply
   68,150.72x = 102,230.17 × 21,403.60
4. Step 4: Simplify right side
   68,150.72x = 2,188,093,357.53
5. Step 5: Solve for x
   x = 2,188,093,357.53/68,150.72
6. Step 6: Final answer
   x = 32,106.68