Finding the Fourth Proportional to 53,185.89, 79,778.59 and 15,746.18

Step by Step Solution

1. Step 1: Write the proportion equation
   53,185.89 : 79,778.59 = 15,746.18 : x
2. Step 2: Convert to fraction form
   53,185.89/79,778.59 = 15,746.18/x
3. Step 3: Cross multiply
   53,185.89x = 79,778.59 × 15,746.18
4. Step 4: Simplify right side
   53,185.89x = 1,256,208,198.37
5. Step 5: Solve for x
   x = 1,256,208,198.37/53,185.89
6. Step 6: Final answer
   x = 23,619.20