Finding the Fourth Proportional to 31,078.84, 46,290.98 and 30,430.84

Step by Step Solution

1. Step 1: Write the proportion equation
   31,078.84 : 46,290.98 = 30,430.84 : x
2. Step 2: Convert to fraction form
   31,078.84/46,290.98 = 30,430.84/x
3. Step 3: Cross multiply
   31,078.84x = 46,290.98 × 30,430.84
4. Step 4: Simplify right side
   31,078.84x = 1,408,673,405.82
5. Step 5: Solve for x
   x = 1,408,673,405.82/31,078.84
6. Step 6: Final answer
   x = 45,325.80