Finding the Fourth Proportional to 49,196.80, 73,804.80 and 21,116.80

Step by Step Solution

1. Step 1: Write the proportion equation
   49,196.80 : 73,804.80 = 21,116.80 : x
2. Step 2: Convert to fraction form
   49,196.80/73,804.80 = 21,116.80/x
3. Step 3: Cross multiply
   49,196.80x = 73,804.80 × 21,116.80
4. Step 4: Simplify right side
   49,196.80x = 1,558,521,200.64
5. Step 5: Solve for x
   x = 1,558,521,200.64/49,196.80
6. Step 6: Final answer
   x = 31,679.32