Finding the Fourth Proportional to 123,966, 185,978.16 and 40,860

Step by Step Solution

1. Step 1: Write the proportion equation
   123,966 : 185,978.16 = 40,860 : x
2. Step 2: Convert to fraction form
   123,966/185,978.16 = 40,860/x
3. Step 3: Cross multiply
   123,966x = 185,978.16 × 40,860
4. Step 4: Simplify right side
   123,966x = 7,599,067,617.60
5. Step 5: Solve for x
   x = 7,599,067,617.60/123,966
6. Step 6: Final answer
   x = 61,299.61