Finding the Fourth Proportional to 123,690.96, 185,384.38 and 57,038.56

Step by Step Solution

1. Step 1: Write the proportion equation
   123,690.96 : 185,384.38 = 57,038.56 : x
2. Step 2: Convert to fraction form
   123,690.96/185,384.38 = 57,038.56/x
3. Step 3: Cross multiply
   123,690.96x = 185,384.38 × 57,038.56
4. Step 4: Simplify right side
   123,690.96x = 10,574,058,081.69
5. Step 5: Solve for x
   x = 10,574,058,081.69/123,690.96
6. Step 6: Final answer
   x = 85,487.72