Finding the Fourth Proportional to 50,603.54, 75,496.15 and 45,559.31

Step by Step Solution

1. Step 1: Write the proportion equation
   50,603.54 : 75,496.15 = 45,559.31 : x
2. Step 2: Convert to fraction form
   50,603.54/75,496.15 = 45,559.31/x
3. Step 3: Cross multiply
   50,603.54x = 75,496.15 × 45,559.31
4. Step 4: Simplify right side
   50,603.54x = 3,439,552,605.79
5. Step 5: Solve for x
   x = 3,439,552,605.79/50,603.54
6. Step 6: Final answer
   x = 67,970.60