Finding the Fourth Proportional to 109,407.40, 164,108.70 and 30,519.40

Step by Step Solution

1. Step 1: Write the proportion equation
   109,407.40 : 164,108.70 = 30,519.40 : x
2. Step 2: Convert to fraction form
   109,407.40/164,108.70 = 30,519.40/x
3. Step 3: Cross multiply
   109,407.40x = 164,108.70 × 30,519.40
4. Step 4: Simplify right side
   109,407.40x = 5,008,499,058.78
5. Step 5: Solve for x
   x = 5,008,499,058.78/109,407.40
6. Step 6: Final answer
   x = 45,778.43