Finding the Fourth Proportional to 43,118.15, 64,685.06 and 17,817.72

Step by Step Solution

1. Step 1: Write the proportion equation
   43,118.15 : 64,685.06 = 17,817.72 : x
2. Step 2: Convert to fraction form
   43,118.15/64,685.06 = 17,817.72/x
3. Step 3: Cross multiply
   43,118.15x = 64,685.06 × 17,817.72
4. Step 4: Simplify right side
   43,118.15x = 1,152,540,336.16
5. Step 5: Solve for x
   x = 1,152,540,336.16/43,118.15
6. Step 6: Final answer
   x = 26,729.82