Finding the Fourth Proportional to 30,745.32, 42,428.10 and 17,316.72

Step by Step Solution

1. Step 1: Write the proportion equation
   30,745.32 : 42,428.10 = 17,316.72 : x
2. Step 2: Convert to fraction form
   30,745.32/42,428.10 = 17,316.72/x
3. Step 3: Cross multiply
   30,745.32x = 42,428.10 × 17,316.72
4. Step 4: Simplify right side
   30,745.32x = 734,715,527.83
5. Step 5: Solve for x
   x = 734,715,527.83/30,745.32
6. Step 6: Final answer
   x = 23,896.82