Finding the Fourth Proportional to 105,788.94, 158,681.73 and 42,607.57

Step by Step Solution

1. Step 1: Write the proportion equation
   105,788.94 : 158,681.73 = 42,607.57 : x
2. Step 2: Convert to fraction form
   105,788.94/158,681.73 = 42,607.57/x
3. Step 3: Cross multiply
   105,788.94x = 158,681.73 × 42,607.57
4. Step 4: Simplify right side
   105,788.94x = 6,761,042,918.70
5. Step 5: Solve for x
   x = 6,761,042,918.70/105,788.94
6. Step 6: Final answer
   x = 63,910.68