Finding the Fourth Proportional to 111,949.06, 154,489.71 and 61,648.06

Step by Step Solution

1. Step 1: Write the proportion equation
   111,949.06 : 154,489.71 = 61,648.06 : x
2. Step 2: Convert to fraction form
   111,949.06/154,489.71 = 61,648.06/x
3. Step 3: Cross multiply
   111,949.06x = 154,489.71 × 61,648.06
4. Step 4: Simplify right side
   111,949.06x = 9,523,990,911.46
5. Step 5: Solve for x
   x = 9,523,990,911.46/111,949.06
6. Step 6: Final answer
   x = 85,074.33