Finding the Fourth Proportional to 243,886.05, 336,415.41 and 161,100.54

Step by Step Solution

1. Step 1: Write the proportion equation
   243,886.05 : 336,415.41 = 161,100.54 : x
2. Step 2: Convert to fraction form
   243,886.05/336,415.41 = 161,100.54/x
3. Step 3: Cross multiply
   243,886.05x = 336,415.41 × 161,100.54
4. Step 4: Simplify right side
   243,886.05x = 54,196,704,215.32
5. Step 5: Solve for x
   x = 54,196,704,215.32/243,886.05
6. Step 6: Final answer
   x = 222,221.42