Finding the Fourth Proportional to 151,808.28, 209,494.31 and 83,825.21

Step by Step Solution

1. Step 1: Write the proportion equation
   151,808.28 : 209,494.31 = 83,825.21 : x
2. Step 2: Convert to fraction form
   151,808.28/209,494.31 = 83,825.21/x
3. Step 3: Cross multiply
   151,808.28x = 209,494.31 × 83,825.21
4. Step 4: Simplify right side
   151,808.28x = 17,560,905,105.77
5. Step 5: Solve for x
   x = 17,560,905,105.77/151,808.28
6. Step 6: Final answer
   x = 115,678.18