Finding the Fourth Proportional to 55,078.56, 82,401.57 and 42,503.58

Step by Step Solution

1. Step 1: Write the proportion equation
   55,078.56 : 82,401.57 = 42,503.58 : x
2. Step 2: Convert to fraction form
   55,078.56/82,401.57 = 42,503.58/x
3. Step 3: Cross multiply
   55,078.56x = 82,401.57 × 42,503.58
4. Step 4: Simplify right side
   55,078.56x = 3,502,361,722.62
5. Step 5: Solve for x
   x = 3,502,361,722.62/55,078.56
6. Step 6: Final answer
   x = 63,588.48