Finding the Fourth Proportional to 215,200, 322,851.84 and 67,456

Step by Step Solution

1. Step 1: Write the proportion equation
   215,200 : 322,851.84 = 67,456 : x
2. Step 2: Convert to fraction form
   215,200/322,851.84 = 67,456/x
3. Step 3: Cross multiply
   215,200x = 322,851.84 × 67,456
4. Step 4: Simplify right side
   215,200x = 21,778,293,719.04
5. Step 5: Solve for x
   x = 21,778,293,719.04/215,200
6. Step 6: Final answer
   x = 101,200.25