Finding the Fourth Proportional to 123,911.78, 185,869.49 and 30,417.53

Step by Step Solution

1. Step 1: Write the proportion equation
   123,911.78 : 185,869.49 = 30,417.53 : x
2. Step 2: Convert to fraction form
   123,911.78/185,869.49 = 30,417.53/x
3. Step 3: Cross multiply
   123,911.78x = 185,869.49 × 30,417.53
4. Step 4: Simplify right side
   123,911.78x = 5,653,689,706.72
5. Step 5: Solve for x
   x = 5,653,689,706.72/123,911.78
6. Step 6: Final answer
   x = 45,626.73