Finding the Fourth Proportional to 42,938, 59,234.28 and 30,369.68

Step by Step Solution

1. Step 1: Write the proportion equation
   42,938 : 59,234.28 = 30,369.68 : x
2. Step 2: Convert to fraction form
   42,938/59,234.28 = 30,369.68/x
3. Step 3: Cross multiply
   42,938x = 59,234.28 × 30,369.68
4. Step 4: Simplify right side
   42,938x = 1,798,926,128.63
5. Step 5: Solve for x
   x = 1,798,926,128.63/42,938
6. Step 6: Final answer
   x = 41,895.90