Finding the Fourth Proportional to 108,990, 163,396.74 and 34,071.54

Step by Step Solution

1. Step 1: Write the proportion equation
   108,990 : 163,396.74 = 34,071.54 : x
2. Step 2: Convert to fraction form
   108,990/163,396.74 = 34,071.54/x
3. Step 3: Cross multiply
   108,990x = 163,396.74 × 34,071.54
4. Step 4: Simplify right side
   108,990x = 5,567,178,562.78
5. Step 5: Solve for x
   x = 5,567,178,562.78/108,990
6. Step 6: Final answer
   x = 51,079.72