Finding the Fourth Proportional to 105,505.16, 158,273.30 and 30,615.57

Step by Step Solution

1. Step 1: Write the proportion equation
   105,505.16 : 158,273.30 = 30,615.57 : x
2. Step 2: Convert to fraction form
   105,505.16/158,273.30 = 30,615.57/x
3. Step 3: Cross multiply
   105,505.16x = 158,273.30 × 30,615.57
4. Step 4: Simplify right side
   105,505.16x = 4,845,627,371.82
5. Step 5: Solve for x
   x = 4,845,627,371.82/105,505.16
6. Step 6: Final answer
   x = 45,927.87