Finding the Fourth Proportional to 108,591.02, 162,888.69 and 71,388.38

Step by Step Solution

1. Step 1: Write the proportion equation
   108,591.02 : 162,888.69 = 71,388.38 : x
2. Step 2: Convert to fraction form
   108,591.02/162,888.69 = 71,388.38/x
3. Step 3: Cross multiply
   108,591.02x = 162,888.69 × 71,388.38
4. Step 4: Simplify right side
   108,591.02x = 11,628,359,699.42
5. Step 5: Solve for x
   x = 11,628,359,699.42/108,591.02
6. Step 6: Final answer
   x = 107,083.99