Finding the Fourth Proportional to 65,821.69, 98,740.79 and 21,436.52

Step by Step Solution

1. Step 1: Write the proportion equation
   65,821.69 : 98,740.79 = 21,436.52 : x
2. Step 2: Convert to fraction form
   65,821.69/98,740.79 = 21,436.52/x
3. Step 3: Cross multiply
   65,821.69x = 98,740.79 × 21,436.52
4. Step 4: Simplify right side
   65,821.69x = 2,116,658,919.65
5. Step 5: Solve for x
   x = 2,116,658,919.65/65,821.69
6. Step 6: Final answer
   x = 32,157.47