Finding the Fourth Proportional to 105,555.40, 158,112.30 and 49,443.40

Step by Step Solution

1. Step 1: Write the proportion equation
   105,555.40 : 158,112.30 = 49,443.40 : x
2. Step 2: Convert to fraction form
   105,555.40/158,112.30 = 49,443.40/x
3. Step 3: Cross multiply
   105,555.40x = 158,112.30 × 49,443.40
4. Step 4: Simplify right side
   105,555.40x = 7,817,609,693.82
5. Step 5: Solve for x
   x = 7,817,609,693.82/105,555.40
6. Step 6: Final answer
   x = 74,061.67