Finding the Fourth Proportional to 50,123.54, 69,012.69 and 42,554.90

Step by Step Solution

1. Step 1: Write the proportion equation
   50,123.54 : 69,012.69 = 42,554.90 : x
2. Step 2: Convert to fraction form
   50,123.54/69,012.69 = 42,554.90/x
3. Step 3: Cross multiply
   50,123.54x = 69,012.69 × 42,554.90
4. Step 4: Simplify right side
   50,123.54x = 2,936,828,121.68
5. Step 5: Solve for x
   x = 2,936,828,121.68/50,123.54
6. Step 6: Final answer
   x = 58,591.79