Finding the Fourth Proportional to 67,680.32, 101,399.90 and 57,718.54

Step by Step Solution

1. Step 1: Write the proportion equation
   67,680.32 : 101,399.90 = 57,718.54 : x
2. Step 2: Convert to fraction form
   67,680.32/101,399.90 = 57,718.54/x
3. Step 3: Cross multiply
   67,680.32x = 101,399.90 × 57,718.54
4. Step 4: Simplify right side
   67,680.32x = 5,852,654,184.15
5. Step 5: Solve for x
   x = 5,852,654,184.15/67,680.32
6. Step 6: Final answer
   x = 86,474.98