Finding the Fourth Proportional to 113,485, 170,227.50 and 30,379

Step by Step Solution

1. Step 1: Write the proportion equation
   113,485 : 170,227.50 = 30,379 : x
2. Step 2: Convert to fraction form
   113,485/170,227.50 = 30,379/x
3. Step 3: Cross multiply
   113,485x = 170,227.50 × 30,379
4. Step 4: Simplify right side
   113,485x = 5,171,341,222.50
5. Step 5: Solve for x
   x = 5,171,341,222.50/113,485
6. Step 6: Final answer
   x = 45,568.50