Finding the Fourth Proportional to 42,639.78, 58,842.18 and 23,521.42

Step by Step Solution

1. Step 1: Write the proportion equation
   42,639.78 : 58,842.18 = 23,521.42 : x
2. Step 2: Convert to fraction form
   42,639.78/58,842.18 = 23,521.42/x
3. Step 3: Cross multiply
   42,639.78x = 58,842.18 × 23,521.42
4. Step 4: Simplify right side
   42,639.78x = 1,384,051,629.50
5. Step 5: Solve for x
   x = 1,384,051,629.50/42,639.78
6. Step 6: Final answer
   x = 32,459.16