Finding the Fourth Proportional to 65,864.39, 98,812.23 and 21,491.15

Step by Step Solution

1. Step 1: Write the proportion equation
   65,864.39 : 98,812.23 = 21,491.15 : x
2. Step 2: Convert to fraction form
   65,864.39/98,812.23 = 21,491.15/x
3. Step 3: Cross multiply
   65,864.39x = 98,812.23 × 21,491.15
4. Step 4: Simplify right side
   65,864.39x = 2,123,588,456.76
5. Step 5: Solve for x
   x = 2,123,588,456.76/65,864.39
6. Step 6: Final answer
   x = 32,241.83