Finding the Fourth Proportional to 102,862.72, 154,216.32 and 82,074.88

Step by Step Solution

1. Step 1: Write the proportion equation
   102,862.72 : 154,216.32 = 82,074.88 : x
2. Step 2: Convert to fraction form
   102,862.72/154,216.32 = 82,074.88/x
3. Step 3: Cross multiply
   102,862.72x = 154,216.32 × 82,074.88
4. Step 4: Simplify right side
   102,862.72x = 12,657,285,958.04
5. Step 5: Solve for x
   x = 12,657,285,958.04/102,862.72
6. Step 6: Final answer
   x = 123,050.27