Finding the Fourth Proportional to 42,118.05, 58,128.18 and 27,005.20

Step by Step Solution

1. Step 1: Write the proportion equation
   42,118.05 : 58,128.18 = 27,005.20 : x
2. Step 2: Convert to fraction form
   42,118.05/58,128.18 = 27,005.20/x
3. Step 3: Cross multiply
   42,118.05x = 58,128.18 × 27,005.20
4. Step 4: Simplify right side
   42,118.05x = 1,569,763,031.85
5. Step 5: Solve for x
   x = 1,569,763,031.85/42,118.05
6. Step 6: Final answer
   x = 37,270.55