Finding the Fourth Proportional to 65,786.42, 98,680.84 and 21,413

Step by Step Solution

1. Step 1: Write the proportion equation
   65,786.42 : 98,680.84 = 21,413 : x
2. Step 2: Convert to fraction form
   65,786.42/98,680.84 = 21,413/x
3. Step 3: Cross multiply
   65,786.42x = 98,680.84 × 21,413
4. Step 4: Simplify right side
   65,786.42x = 2,113,052,826.92
5. Step 5: Solve for x
   x = 2,113,052,826.92/65,786.42
6. Step 6: Final answer
   x = 32,119.89