Finding the Fourth Proportional to 191,081.54, 263,686.11 and 106,196.78

Step by Step Solution

1. Step 1: Write the proportion equation
   191,081.54 : 263,686.11 = 106,196.78 : x
2. Step 2: Convert to fraction form
   191,081.54/263,686.11 = 106,196.78/x
3. Step 3: Cross multiply
   191,081.54x = 263,686.11 × 106,196.78
4. Step 4: Simplify right side
   191,081.54x = 28,002,615,812.73
5. Step 5: Solve for x
   x = 28,002,615,812.73/191,081.54
6. Step 6: Final answer
   x = 146,547.99