Finding the Fourth Proportional to 30,602.67, 42,240.60 and 19,993.83

Step by Step Solution

1. Step 1: Write the proportion equation
   30,602.67 : 42,240.60 = 19,993.83 : x
2. Step 2: Convert to fraction form
   30,602.67/42,240.60 = 19,993.83/x
3. Step 3: Cross multiply
   30,602.67x = 42,240.60 × 19,993.83
4. Step 4: Simplify right side
   30,602.67x = 844,551,375.50
5. Step 5: Solve for x
   x = 844,551,375.50/30,602.67
6. Step 6: Final answer
   x = 27,597.31