Finding the Fourth Proportional to 42,240.99, 63,383.49 and 30,649.89

Step by Step Solution

1. Step 1: Write the proportion equation
   42,240.99 : 63,383.49 = 30,649.89 : x
2. Step 2: Convert to fraction form
   42,240.99/63,383.49 = 30,649.89/x
3. Step 3: Cross multiply
   42,240.99x = 63,383.49 × 30,649.89
4. Step 4: Simplify right side
   42,240.99x = 1,942,696,996.32
5. Step 5: Solve for x
   x = 1,942,696,996.32/42,240.99
6. Step 6: Final answer
   x = 45,990.80