Finding the Fourth Proportional to 42,856.72, 59,135.20 and 26,929.88

Step by Step Solution

1. Step 1: Write the proportion equation
   42,856.72 : 59,135.20 = 26,929.88 : x
2. Step 2: Convert to fraction form
   42,856.72/59,135.20 = 26,929.88/x
3. Step 3: Cross multiply
   42,856.72x = 59,135.20 × 26,929.88
4. Step 4: Simplify right side
   42,856.72x = 1,592,503,839.78
5. Step 5: Solve for x
   x = 1,592,503,839.78/42,856.72
6. Step 6: Final answer
   x = 37,158.79