Finding the Fourth Proportional to 108,589.02, 162,885.69 and 71,386.38

Step by Step Solution

1. Step 1: Write the proportion equation
   108,589.02 : 162,885.69 = 71,386.38 : x
2. Step 2: Convert to fraction form
   108,589.02/162,885.69 = 71,386.38/x
3. Step 3: Cross multiply
   108,589.02x = 162,885.69 × 71,386.38
4. Step 4: Simplify right side
   108,589.02x = 11,627,819,762.90
5. Step 5: Solve for x
   x = 11,627,819,762.90/108,589.02
6. Step 6: Final answer
   x = 107,080.99