Finding the Fourth Proportional to 105,792.30, 158,309.28 and 91,609.59

Step by Step Solution

1. Step 1: Write the proportion equation
   105,792.30 : 158,309.28 = 91,609.59 : x
2. Step 2: Convert to fraction form
   105,792.30/158,309.28 = 91,609.59/x
3. Step 3: Cross multiply
   105,792.30x = 158,309.28 × 91,609.59
4. Step 4: Simplify right side
   105,792.30x = 14,502,648,234.00
5. Step 5: Solve for x
   x = 14,502,648,234.00/105,792.30
6. Step 6: Final answer
   x = 137,086.05