Finding the Fourth Proportional to 65,782.32, 98,650.52 and 21,400.80

Step by Step Solution

1. Step 1: Write the proportion equation
   65,782.32 : 98,650.52 = 21,400.80 : x
2. Step 2: Convert to fraction form
   65,782.32/98,650.52 = 21,400.80/x
3. Step 3: Cross multiply
   65,782.32x = 98,650.52 × 21,400.80
4. Step 4: Simplify right side
   65,782.32x = 2,111,200,048.42
5. Step 5: Solve for x
   x = 2,111,200,048.42/65,782.32
6. Step 6: Final answer
   x = 32,093.73