Finding the Fourth Proportional to 123,578.10, 185,356.35 and 40,472.10

Step by Step Solution

1. Step 1: Write the proportion equation
   123,578.10 : 185,356.35 = 40,472.10 : x
2. Step 2: Convert to fraction form
   123,578.10/185,356.35 = 40,472.10/x
3. Step 3: Cross multiply
   123,578.10x = 185,356.35 × 40,472.10
4. Step 4: Simplify right side
   123,578.10x = 7,501,760,732.84
5. Step 5: Solve for x
   x = 7,501,760,732.84/123,578.10
6. Step 6: Final answer
   x = 60,704.61