Finding the Fourth Proportional to 151,054.28, 208,456.80 and 83,078.72

Step by Step Solution

1. Step 1: Write the proportion equation
   151,054.28 : 208,456.80 = 83,078.72 : x
2. Step 2: Convert to fraction form
   151,054.28/208,456.80 = 83,078.72/x
3. Step 3: Cross multiply
   151,054.28x = 208,456.80 × 83,078.72
4. Step 4: Simplify right side
   151,054.28x = 17,318,324,119.30
5. Step 5: Solve for x
   x = 17,318,324,119.30/151,054.28
6. Step 6: Final answer
   x = 114,649.68