Finding the Fourth Proportional to 223,620.16, 335,488.56 and 83,380

Step by Step Solution

1. Step 1: Write the proportion equation
   223,620.16 : 335,488.56 = 83,380 : x
2. Step 2: Convert to fraction form
   223,620.16/335,488.56 = 83,380/x
3. Step 3: Cross multiply
   223,620.16x = 335,488.56 × 83,380
4. Step 4: Simplify right side
   223,620.16x = 27,973,036,132.80
5. Step 5: Solve for x
   x = 27,973,036,132.80/223,620.16
6. Step 6: Final answer
   x = 125,091.75