Finding the Fourth Proportional to 68,413.02, 102,622.41 and 21,664.86

Step by Step Solution

1. Step 1: Write the proportion equation
   68,413.02 : 102,622.41 = 21,664.86 : x
2. Step 2: Convert to fraction form
   68,413.02/102,622.41 = 21,664.86/x
3. Step 3: Cross multiply
   68,413.02x = 102,622.41 × 21,664.86
4. Step 4: Simplify right side
   68,413.02x = 2,223,300,145.51
5. Step 5: Solve for x
   x = 2,223,300,145.51/68,413.02
6. Step 6: Final answer
   x = 32,498.20