Finding the Fourth Proportional to 189,945.48, 262,131.63 and 105,063.15

Step by Step Solution

1. Step 1: Write the proportion equation
   189,945.48 : 262,131.63 = 105,063.15 : x
2. Step 2: Convert to fraction form
   189,945.48/262,131.63 = 105,063.15/x
3. Step 3: Cross multiply
   189,945.48x = 262,131.63 × 105,063.15
4. Step 4: Simplify right side
   189,945.48x = 27,540,374,762.43
5. Step 5: Solve for x
   x = 27,540,374,762.43/189,945.48
6. Step 6: Final answer
   x = 144,990.95