Finding the Fourth Proportional to 214,100.72, 321,445.92 and 108,992.96

Step by Step Solution

1. Step 1: Write the proportion equation
   214,100.72 : 321,445.92 = 108,992.96 : x
2. Step 2: Convert to fraction form
   214,100.72/321,445.92 = 108,992.96/x
3. Step 3: Cross multiply
   214,100.72x = 321,445.92 × 108,992.96
4. Step 4: Simplify right side
   214,100.72x = 35,035,342,300.72
5. Step 5: Solve for x
   x = 35,035,342,300.72/214,100.72
6. Step 6: Final answer
   x = 163,639.54