Finding the Fourth Proportional to 109,388.28, 164,067.48 and 42,874.89

Step by Step Solution

1. Step 1: Write the proportion equation
   109,388.28 : 164,067.48 = 42,874.89 : x
2. Step 2: Convert to fraction form
   109,388.28/164,067.48 = 42,874.89/x
3. Step 3: Cross multiply
   109,388.28x = 164,067.48 × 42,874.89
4. Step 4: Simplify right side
   109,388.28x = 7,034,375,157.58
5. Step 5: Solve for x
   x = 7,034,375,157.58/109,388.28
6. Step 6: Final answer
   x = 64,306.48