Finding the Fourth Proportional to 43,156.73, 64,743.91 and 18,196.80

Step by Step Solution

1. Step 1: Write the proportion equation
   43,156.73 : 64,743.91 = 18,196.80 : x
2. Step 2: Convert to fraction form
   43,156.73/64,743.91 = 18,196.80/x
3. Step 3: Cross multiply
   43,156.73x = 64,743.91 × 18,196.80
4. Step 4: Simplify right side
   43,156.73x = 1,178,132,004.23
5. Step 5: Solve for x
   x = 1,178,132,004.23/43,156.73
6. Step 6: Final answer
   x = 27,298.92