Finding the Fourth Proportional to 109,028.69, 163,546.10 and 30,142.91

Step by Step Solution

1. Step 1: Write the proportion equation
   109,028.69 : 163,546.10 = 30,142.91 : x
2. Step 2: Convert to fraction form
   109,028.69/163,546.10 = 30,142.91/x
3. Step 3: Cross multiply
   109,028.69x = 163,546.10 × 30,142.91
4. Step 4: Simplify right side
   109,028.69x = 4,929,755,373.15
5. Step 5: Solve for x
   x = 4,929,755,373.15/109,028.69
6. Step 6: Final answer
   x = 45,215.21