Finding the Fourth Proportional to 30,611.99, 42,233.69 and 20,007.77

Step by Step Solution

1. Step 1: Write the proportion equation
   30,611.99 : 42,233.69 = 20,007.77 : x
2. Step 2: Convert to fraction form
   30,611.99/42,233.69 = 20,007.77/x
3. Step 3: Cross multiply
   30,611.99x = 42,233.69 × 20,007.77
4. Step 4: Simplify right side
   30,611.99x = 845,001,644.56
5. Step 5: Solve for x
   x = 845,001,644.56/30,611.99
6. Step 6: Final answer
   x = 27,603.62