Finding the Fourth Proportional to 108,487.47, 162,729.69 and 105,807.18

Step by Step Solution

1. Step 1: Write the proportion equation
   108,487.47 : 162,729.69 = 105,807.18 : x
2. Step 2: Convert to fraction form
   108,487.47/162,729.69 = 105,807.18/x
3. Step 3: Cross multiply
   108,487.47x = 162,729.69 × 105,807.18
4. Step 4: Simplify right side
   108,487.47x = 17,217,969,601.17
5. Step 5: Solve for x
   x = 17,217,969,601.17/108,487.47
6. Step 6: Final answer
   x = 158,709.29