Finding the Fourth Proportional to 60,780.32, 83,839.55 and 40,363.25

Step by Step Solution

1. Step 1: Write the proportion equation
   60,780.32 : 83,839.55 = 40,363.25 : x
2. Step 2: Convert to fraction form
   60,780.32/83,839.55 = 40,363.25/x
3. Step 3: Cross multiply
   60,780.32x = 83,839.55 × 40,363.25
4. Step 4: Simplify right side
   60,780.32x = 3,384,036,724.32
5. Step 5: Solve for x
   x = 3,384,036,724.32/60,780.32
6. Step 6: Final answer
   x = 55,676.52