Finding the Fourth Proportional to 65,870.66, 98,821.71 and 21,497.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,870.66 : 98,821.71 = 21,497.50 : x
2. Step 2: Convert to fraction form
   65,870.66/98,821.71 = 21,497.50/x
3. Step 3: Cross multiply
   65,870.66x = 98,821.71 × 21,497.50
4. Step 4: Simplify right side
   65,870.66x = 2,124,419,216.62
5. Step 5: Solve for x
   x = 2,124,419,216.62/65,870.66
6. Step 6: Final answer
   x = 32,251.37