Finding the Fourth Proportional to 42,122.82, 58,040.88 and 28,670.34

Step by Step Solution

1. Step 1: Write the proportion equation
   42,122.82 : 58,040.88 = 28,670.34 : x
2. Step 2: Convert to fraction form
   42,122.82/58,040.88 = 28,670.34/x
3. Step 3: Cross multiply
   42,122.82x = 58,040.88 × 28,670.34
4. Step 4: Simplify right side
   42,122.82x = 1,664,051,763.50
5. Step 5: Solve for x
   x = 1,664,051,763.50/42,122.82
6. Step 6: Final answer
   x = 39,504.76