Finding the Fourth Proportional to 108,424.30, 162,406.05 and 89,992.30

Step by Step Solution

1. Step 1: Write the proportion equation
   108,424.30 : 162,406.05 = 89,992.30 : x
2. Step 2: Convert to fraction form
   108,424.30/162,406.05 = 89,992.30/x
3. Step 3: Cross multiply
   108,424.30x = 162,406.05 × 89,992.30
4. Step 4: Simplify right side
   108,424.30x = 14,615,293,973.42
5. Step 5: Solve for x
   x = 14,615,293,973.42/108,424.30
6. Step 6: Final answer
   x = 134,797.22