Finding the Fourth Proportional to 191,146.72, 263,788.20 and 105,101.24

Step by Step Solution

1. Step 1: Write the proportion equation
   191,146.72 : 263,788.20 = 105,101.24 : x
2. Step 2: Convert to fraction form
   191,146.72/263,788.20 = 105,101.24/x
3. Step 3: Cross multiply
   191,146.72x = 263,788.20 × 105,101.24
4. Step 4: Simplify right side
   191,146.72x = 27,724,466,917.37
5. Step 5: Solve for x
   x = 27,724,466,917.37/191,146.72
6. Step 6: Final answer
   x = 145,042.86