Finding the Fourth Proportional to 191,016.63, 263,587.10 and 104,971.10

Step by Step Solution

1. Step 1: Write the proportion equation
   191,016.63 : 263,587.10 = 104,971.10 : x
2. Step 2: Convert to fraction form
   191,016.63/263,587.10 = 104,971.10/x
3. Step 3: Cross multiply
   191,016.63x = 263,587.10 × 104,971.10
4. Step 4: Simplify right side
   191,016.63x = 27,669,025,990.02
5. Step 5: Solve for x
   x = 27,669,025,990.02/191,016.63
6. Step 6: Final answer
   x = 144,851.40