Finding the Fourth Proportional to 42,506.58, 58,566.06 and 28,142.04

Step by Step Solution

1. Step 1: Write the proportion equation
   42,506.58 : 58,566.06 = 28,142.04 : x
2. Step 2: Convert to fraction form
   42,506.58/58,566.06 = 28,142.04/x
3. Step 3: Cross multiply
   42,506.58x = 58,566.06 × 28,142.04
4. Step 4: Simplify right side
   42,506.58x = 1,648,168,403.16
5. Step 5: Solve for x
   x = 1,648,168,403.16/42,506.58
6. Step 6: Final answer
   x = 38,774.43