Finding the Fourth Proportional to 65,792.84, 98,663.52 and 21,408.80

Step by Step Solution

1. Step 1: Write the proportion equation
   65,792.84 : 98,663.52 = 21,408.80 : x
2. Step 2: Convert to fraction form
   65,792.84/98,663.52 = 21,408.80/x
3. Step 3: Cross multiply
   65,792.84x = 98,663.52 × 21,408.80
4. Step 4: Simplify right side
   65,792.84x = 2,112,267,566.98
5. Step 5: Solve for x
   x = 2,112,267,566.98/65,792.84
6. Step 6: Final answer
   x = 32,104.82