Finding the Fourth Proportional to 65,784.24, 98,681.76 and 21,399.48

Step by Step Solution

1. Step 1: Write the proportion equation
   65,784.24 : 98,681.76 = 21,399.48 : x
2. Step 2: Convert to fraction form
   65,784.24/98,681.76 = 21,399.48/x
3. Step 3: Cross multiply
   65,784.24x = 98,681.76 × 21,399.48
4. Step 4: Simplify right side
   65,784.24x = 2,111,738,349.48
5. Step 5: Solve for x
   x = 2,111,738,349.48/65,784.24
6. Step 6: Final answer
   x = 32,100.98