Finding the Fourth Proportional to 111,326.48, 152,715.54 and 105,300.56

Step by Step Solution

1. Step 1: Write the proportion equation
   111,326.48 : 152,715.54 = 105,300.56 : x
2. Step 2: Convert to fraction form
   111,326.48/152,715.54 = 105,300.56/x
3. Step 3: Cross multiply
   111,326.48x = 152,715.54 × 105,300.56
4. Step 4: Simplify right side
   111,326.48x = 16,081,031,882.70
5. Step 5: Solve for x
   x = 16,081,031,882.70/111,326.48
6. Step 6: Final answer
   x = 144,449.30