Finding the Fourth Proportional to 165,142.47, 227,897.78 and 89,690.97

Step by Step Solution

1. Step 1: Write the proportion equation
   165,142.47 : 227,897.78 = 89,690.97 : x
2. Step 2: Convert to fraction form
   165,142.47/227,897.78 = 89,690.97/x
3. Step 3: Cross multiply
   165,142.47x = 227,897.78 × 89,690.97
4. Step 4: Simplify right side
   165,142.47x = 20,440,372,500.59
5. Step 5: Solve for x
   x = 20,440,372,500.59/165,142.47
6. Step 6: Final answer
   x = 123,774.17