Finding the Fourth Proportional to 61,321.55, 91,995.59 and 18,623.48

Step by Step Solution

1. Step 1: Write the proportion equation
   61,321.55 : 91,995.59 = 18,623.48 : x
2. Step 2: Convert to fraction form
   61,321.55/91,995.59 = 18,623.48/x
3. Step 3: Cross multiply
   61,321.55x = 91,995.59 × 18,623.48
4. Step 4: Simplify right side
   61,321.55x = 1,713,277,617.03
5. Step 5: Solve for x
   x = 1,713,277,617.03/61,321.55
6. Step 6: Final answer
   x = 27,939.24