Finding the Fourth Proportional to 215,081.76, 322,688.28 and 109,974.54

Step by Step Solution

1. Step 1: Write the proportion equation
   215,081.76 : 322,688.28 = 109,974.54 : x
2. Step 2: Convert to fraction form
   215,081.76/322,688.28 = 109,974.54/x
3. Step 3: Cross multiply
   215,081.76x = 322,688.28 × 109,974.54
4. Step 4: Simplify right side
   215,081.76x = 35,487,495,156.39
5. Step 5: Solve for x
   x = 35,487,495,156.39/215,081.76
6. Step 6: Final answer
   x = 164,995.37