Finding the Fourth Proportional to 113,864.72, 170,805.72 and 30,758

Step by Step Solution

1. Step 1: Write the proportion equation
   113,864.72 : 170,805.72 = 30,758 : x
2. Step 2: Convert to fraction form
   113,864.72/170,805.72 = 30,758/x
3. Step 3: Cross multiply
   113,864.72x = 170,805.72 × 30,758
4. Step 4: Simplify right side
   113,864.72x = 5,253,642,335.76
5. Step 5: Solve for x
   x = 5,253,642,335.76/113,864.72
6. Step 6: Final answer
   x = 46,139.33