Finding the Fourth Proportional to 68,402.72, 102,538.50 and 21,622.82

Step by Step Solution

1. Step 1: Write the proportion equation
   68,402.72 : 102,538.50 = 21,622.82 : x
2. Step 2: Convert to fraction form
   68,402.72/102,538.50 = 21,622.82/x
3. Step 3: Cross multiply
   68,402.72x = 102,538.50 × 21,622.82
4. Step 4: Simplify right side
   68,402.72x = 2,217,171,528.57
5. Step 5: Solve for x
   x = 2,217,171,528.57/68,402.72
6. Step 6: Final answer
   x = 32,413.50