Finding the Fourth Proportional to 105,538.92, 158,271.88 and 30,638.76

Step by Step Solution

1. Step 1: Write the proportion equation
   105,538.92 : 158,271.88 = 30,638.76 : x
2. Step 2: Convert to fraction form
   105,538.92/158,271.88 = 30,638.76/x
3. Step 3: Cross multiply
   105,538.92x = 158,271.88 × 30,638.76
4. Step 4: Simplify right side
   105,538.92x = 4,849,254,146.07
5. Step 5: Solve for x
   x = 4,849,254,146.07/105,538.92
6. Step 6: Final answer
   x = 45,947.54