Finding the Fourth Proportional to 150,780.98, 208,078.03 and 82,787.15

Step by Step Solution

1. Step 1: Write the proportion equation
   150,780.98 : 208,078.03 = 82,787.15 : x
2. Step 2: Convert to fraction form
   150,780.98/208,078.03 = 82,787.15/x
3. Step 3: Cross multiply
   150,780.98x = 208,078.03 × 82,787.15
4. Step 4: Simplify right side
   150,780.98x = 17,226,187,081.31
5. Step 5: Solve for x
   x = 17,226,187,081.31/150,780.98
6. Step 6: Final answer
   x = 114,246.42