Finding the Fourth Proportional to 105,516.68, 158,283.21 and 30,638.05

Step by Step Solution

1. Step 1: Write the proportion equation
   105,516.68 : 158,283.21 = 30,638.05 : x
2. Step 2: Convert to fraction form
   105,516.68/158,283.21 = 30,638.05/x
3. Step 3: Cross multiply
   105,516.68x = 158,283.21 × 30,638.05
4. Step 4: Simplify right side
   105,516.68x = 4,849,488,621.33
5. Step 5: Solve for x
   x = 4,849,488,621.33/105,516.68
6. Step 6: Final answer
   x = 45,959.45