Finding the Fourth Proportional to 105,294.68, 144,940.49 and 91,842.50

Step by Step Solution

1. Step 1: Write the proportion equation
   105,294.68 : 144,940.49 = 91,842.50 : x
2. Step 2: Convert to fraction form
   105,294.68/144,940.49 = 91,842.50/x
3. Step 3: Cross multiply
   105,294.68x = 144,940.49 × 91,842.50
4. Step 4: Simplify right side
   105,294.68x = 13,311,695,768.91
5. Step 5: Solve for x
   x = 13,311,695,768.91/105,294.68
6. Step 6: Final answer
   x = 126,423.26