Finding the Fourth Proportional to 105,385.38, 158,077.89 and 49,206.66

Step by Step Solution

1. Step 1: Write the proportion equation
   105,385.38 : 158,077.89 = 49,206.66 : x
2. Step 2: Convert to fraction form
   105,385.38/158,077.89 = 49,206.66/x
3. Step 3: Cross multiply
   105,385.38x = 158,077.89 × 49,206.66
4. Step 4: Simplify right side
   105,385.38x = 7,778,484,986.75
5. Step 5: Solve for x
   x = 7,778,484,986.75/105,385.38
6. Step 6: Final answer
   x = 73,809.91