Finding the Fourth Proportional to 65,822.29, 98,743.67 and 21,438.71

Step by Step Solution

1. Step 1: Write the proportion equation
   65,822.29 : 98,743.67 = 21,438.71 : x
2. Step 2: Convert to fraction form
   65,822.29/98,743.67 = 21,438.71/x
3. Step 3: Cross multiply
   65,822.29x = 98,743.67 × 21,438.71
4. Step 4: Simplify right side
   65,822.29x = 2,116,936,875.83
5. Step 5: Solve for x
   x = 2,116,936,875.83/65,822.29
6. Step 6: Final answer
   x = 32,161.40