Finding the Fourth Proportional to 191,061.48, 263,669.28 and 105,024.90

Step by Step Solution

1. Step 1: Write the proportion equation
   191,061.48 : 263,669.28 = 105,024.90 : x
2. Step 2: Convert to fraction form
   191,061.48/263,669.28 = 105,024.90/x
3. Step 3: Cross multiply
   191,061.48x = 263,669.28 × 105,024.90
4. Step 4: Simplify right side
   191,061.48x = 27,691,840,359.99
5. Step 5: Solve for x
   x = 27,691,840,359.99/191,061.48
6. Step 6: Final answer
   x = 144,936.80