Finding the Fourth Proportional to 108,992.76, 163,485.90 and 30,111.72

Step by Step Solution

1. Step 1: Write the proportion equation
   108,992.76 : 163,485.90 = 30,111.72 : x
2. Step 2: Convert to fraction form
   108,992.76/163,485.90 = 30,111.72/x
3. Step 3: Cross multiply
   108,992.76x = 163,485.90 × 30,111.72
4. Step 4: Simplify right side
   108,992.76x = 4,922,841,644.75
5. Step 5: Solve for x
   x = 4,922,841,644.75/108,992.76
6. Step 6: Final answer
   x = 45,166.68