Finding the Fourth Proportional to 223,665.48, 308,676.15 and 128,181.06

Step by Step Solution

1. Step 1: Write the proportion equation
   223,665.48 : 308,676.15 = 128,181.06 : x
2. Step 2: Convert to fraction form
   223,665.48/308,676.15 = 128,181.06/x
3. Step 3: Cross multiply
   223,665.48x = 308,676.15 × 128,181.06
4. Step 4: Simplify right side
   223,665.48x = 39,566,436,103.72
5. Step 5: Solve for x
   x = 39,566,436,103.72/223,665.48
6. Step 6: Final answer
   x = 176,900.06