Finding the Fourth Proportional to 43,216.82, 64,852.56 and 16,920.88

Step by Step Solution

1. Step 1: Write the proportion equation
   43,216.82 : 64,852.56 = 16,920.88 : x
2. Step 2: Convert to fraction form
   43,216.82/64,852.56 = 16,920.88/x
3. Step 3: Cross multiply
   43,216.82x = 64,852.56 × 16,920.88
4. Step 4: Simplify right side
   43,216.82x = 1,097,362,385.45
5. Step 5: Solve for x
   x = 1,097,362,385.45/43,216.82
6. Step 6: Final answer
   x = 25,392.02