Finding the Fourth Proportional to 72,390.91, 108,559.03 and 34,938.54

Step by Step Solution

1. Step 1: Write the proportion equation
   72,390.91 : 108,559.03 = 34,938.54 : x
2. Step 2: Convert to fraction form
   72,390.91/108,559.03 = 34,938.54/x
3. Step 3: Cross multiply
   72,390.91x = 108,559.03 × 34,938.54
4. Step 4: Simplify right side
   72,390.91x = 3,792,894,012.02
5. Step 5: Solve for x
   x = 3,792,894,012.02/72,390.91
6. Step 6: Final answer
   x = 52,394.62