Finding the Fourth Proportional to 109,401.20, 164,081.55 and 30,499.10

Step by Step Solution

1. Step 1: Write the proportion equation
   109,401.20 : 164,081.55 = 30,499.10 : x
2. Step 2: Convert to fraction form
   109,401.20/164,081.55 = 30,499.10/x
3. Step 3: Cross multiply
   109,401.20x = 164,081.55 × 30,499.10
4. Step 4: Simplify right side
   109,401.20x = 5,004,339,601.61
5. Step 5: Solve for x
   x = 5,004,339,601.61/109,401.20
6. Step 6: Final answer
   x = 45,743.00