Finding the Fourth Proportional to 79,422.88, 109,568.64 and 49,200.16

Step by Step Solution

1. Step 1: Write the proportion equation
   79,422.88 : 109,568.64 = 49,200.16 : x
2. Step 2: Convert to fraction form
   79,422.88/109,568.64 = 49,200.16/x
3. Step 3: Cross multiply
   79,422.88x = 109,568.64 × 49,200.16
4. Step 4: Simplify right side
   79,422.88x = 5,390,794,618.98
5. Step 5: Solve for x
   x = 5,390,794,618.98/79,422.88
6. Step 6: Final answer
   x = 67,874.58