Finding the Fourth Proportional to 50,007.80, 74,925.30 and 42,231.80

Step by Step Solution

1. Step 1: Write the proportion equation
   50,007.80 : 74,925.30 = 42,231.80 : x
2. Step 2: Convert to fraction form
   50,007.80/74,925.30 = 42,231.80/x
3. Step 3: Cross multiply
   50,007.80x = 74,925.30 × 42,231.80
4. Step 4: Simplify right side
   50,007.80x = 3,164,230,284.54
5. Step 5: Solve for x
   x = 3,164,230,284.54/50,007.80
6. Step 6: Final answer
   x = 63,274.73