Finding the Fourth Proportional to 61,222.56, 91,825.20 and 19,664.16

Step by Step Solution

1. Step 1: Write the proportion equation
   61,222.56 : 91,825.20 = 19,664.16 : x
2. Step 2: Convert to fraction form
   61,222.56/91,825.20 = 19,664.16/x
3. Step 3: Cross multiply
   61,222.56x = 91,825.20 × 19,664.16
4. Step 4: Simplify right side
   61,222.56x = 1,805,665,424.83
5. Step 5: Solve for x
   x = 1,805,665,424.83/61,222.56
6. Step 6: Final answer
   x = 29,493.46