Finding the Fourth Proportional to 165,118.78, 227,865.18 and 89,667.28

Step by Step Solution

1. Step 1: Write the proportion equation
   165,118.78 : 227,865.18 = 89,667.28 : x
2. Step 2: Convert to fraction form
   165,118.78/227,865.18 = 89,667.28/x
3. Step 3: Cross multiply
   165,118.78x = 227,865.18 × 89,667.28
4. Step 4: Simplify right side
   165,118.78x = 20,432,050,897.31
5. Step 5: Solve for x
   x = 20,432,050,897.31/165,118.78
6. Step 6: Final answer
   x = 123,741.53