Finding the Fourth Proportional to 165,139.02, 227,890.56 and 89,687.52

Step by Step Solution

1. Step 1: Write the proportion equation
   165,139.02 : 227,890.56 = 89,687.52 : x
2. Step 2: Convert to fraction form
   165,139.02/227,890.56 = 89,687.52/x
3. Step 3: Cross multiply
   165,139.02x = 227,890.56 × 89,687.52
4. Step 4: Simplify right side
   165,139.02x = 20,438,939,157.81
5. Step 5: Solve for x
   x = 20,438,939,157.81/165,139.02
6. Step 6: Final answer
   x = 123,768.08