Finding the Fourth Proportional to 127,328.65, 175,724.00 and 82,100.78

Step by Step Solution

1. Step 1: Write the proportion equation
   127,328.65 : 175,724.00 = 82,100.78 : x
2. Step 2: Convert to fraction form
   127,328.65/175,724.00 = 82,100.78/x
3. Step 3: Cross multiply
   127,328.65x = 175,724.00 × 82,100.78
4. Step 4: Simplify right side
   127,328.65x = 14,427,077,142.44
5. Step 5: Solve for x
   x = 14,427,077,142.44/127,328.65
6. Step 6: Final answer
   x = 113,305.82