Finding the Fourth Proportional to 102,726.58, 154,436.83 and 82,980.02

Step by Step Solution

1. Step 1: Write the proportion equation
   102,726.58 : 154,436.83 = 82,980.02 : x
2. Step 2: Convert to fraction form
   102,726.58/154,436.83 = 82,980.02/x
3. Step 3: Cross multiply
   102,726.58x = 154,436.83 × 82,980.02
4. Step 4: Simplify right side
   102,726.58x = 12,815,170,986.43
5. Step 5: Solve for x
   x = 12,815,170,986.43/102,726.58
6. Step 6: Final answer
   x = 124,750.29