Finding the Fourth Proportional to 42,777.56, 59,035.28 and 25,787.20

Step by Step Solution

1. Step 1: Write the proportion equation
   42,777.56 : 59,035.28 = 25,787.20 : x
2. Step 2: Convert to fraction form
   42,777.56/59,035.28 = 25,787.20/x
3. Step 3: Cross multiply
   42,777.56x = 59,035.28 × 25,787.20
4. Step 4: Simplify right side
   42,777.56x = 1,522,354,148.30
5. Step 5: Solve for x
   x = 1,522,354,148.30/42,777.56
6. Step 6: Final answer
   x = 35,587.68