Finding the Fourth Proportional to 165,057.71, 227,779.86 and 89,606.21

Step by Step Solution

1. Step 1: Write the proportion equation
   165,057.71 : 227,779.86 = 89,606.21 : x
2. Step 2: Convert to fraction form
   165,057.71/227,779.86 = 89,606.21/x
3. Step 3: Cross multiply
   165,057.71x = 227,779.86 × 89,606.21
4. Step 4: Simplify right side
   165,057.71x = 20,410,488,830.03
5. Step 5: Solve for x
   x = 20,410,488,830.03/165,057.71
6. Step 6: Final answer
   x = 123,656.69