Finding the Fourth Proportional to 123,990.72, 185,984.48 and 30,497.28

Step by Step Solution

1. Step 1: Write the proportion equation
   123,990.72 : 185,984.48 = 30,497.28 : x
2. Step 2: Convert to fraction form
   123,990.72/185,984.48 = 30,497.28/x
3. Step 3: Cross multiply
   123,990.72x = 185,984.48 × 30,497.28
4. Step 4: Simplify right side
   123,990.72x = 5,672,020,762.21
5. Step 5: Solve for x
   x = 5,672,020,762.21/123,990.72
6. Step 6: Final answer
   x = 45,745.53