Finding the Fourth Proportional to 123,867.64, 185,651.34 and 57,169

Step by Step Solution

1. Step 1: Write the proportion equation
   123,867.64 : 185,651.34 = 57,169 : x
2. Step 2: Convert to fraction form
   123,867.64/185,651.34 = 57,169/x
3. Step 3: Cross multiply
   123,867.64x = 185,651.34 × 57,169
4. Step 4: Simplify right side
   123,867.64x = 10,613,501,456.46
5. Step 5: Solve for x
   x = 10,613,501,456.46/123,867.64
6. Step 6: Final answer
   x = 85,684.21