Finding the Fourth Proportional to 65,843.69, 98,781.25 and 21,470.48

Step by Step Solution

1. Step 1: Write the proportion equation
   65,843.69 : 98,781.25 = 21,470.48 : x
2. Step 2: Convert to fraction form
   65,843.69/98,781.25 = 21,470.48/x
3. Step 3: Cross multiply
   65,843.69x = 98,781.25 × 21,470.48
4. Step 4: Simplify right side
   65,843.69x = 2,120,880,852.50
5. Step 5: Solve for x
   x = 2,120,880,852.50/65,843.69
6. Step 6: Final answer
   x = 32,210.85