Finding the Fourth Proportional to 42,638.87, 58,841.78 and 23,777.21

Step by Step Solution

1. Step 1: Write the proportion equation
   42,638.87 : 58,841.78 = 23,777.21 : x
2. Step 2: Convert to fraction form
   42,638.87/58,841.78 = 23,777.21/x
3. Step 3: Cross multiply
   42,638.87x = 58,841.78 × 23,777.21
4. Step 4: Simplify right side
   42,638.87x = 1,399,093,388.05
5. Step 5: Solve for x
   x = 1,399,093,388.05/42,638.87
6. Step 6: Final answer
   x = 32,812.63