Finding the Fourth Proportional to 42,081.57, 63,062.20 and 30,900.54

Step by Step Solution

1. Step 1: Write the proportion equation
   42,081.57 : 63,062.20 = 30,900.54 : x
2. Step 2: Convert to fraction form
   42,081.57/63,062.20 = 30,900.54/x
3. Step 3: Cross multiply
   42,081.57x = 63,062.20 × 30,900.54
4. Step 4: Simplify right side
   42,081.57x = 1,948,656,033.59
5. Step 5: Solve for x
   x = 1,948,656,033.59/42,081.57
6. Step 6: Final answer
   x = 46,306.64