Finding the Fourth Proportional to 34,691.78, 51,786.65 and 30,488.10

Step by Step Solution

1. Step 1: Write the proportion equation
   34,691.78 : 51,786.65 = 30,488.10 : x
2. Step 2: Convert to fraction form
   34,691.78/51,786.65 = 30,488.10/x
3. Step 3: Cross multiply
   34,691.78x = 51,786.65 × 30,488.10
4. Step 4: Simplify right side
   34,691.78x = 1,578,876,411.42
5. Step 5: Solve for x
   x = 1,578,876,411.42/34,691.78
6. Step 6: Final answer
   x = 45,511.55