Finding the Fourth Proportional to 212,276.39, 318,404.20 and 79,146.27

Step by Step Solution

1. Step 1: Write the proportion equation
   212,276.39 : 318,404.20 = 79,146.27 : x
2. Step 2: Convert to fraction form
   212,276.39/318,404.20 = 79,146.27/x
3. Step 3: Cross multiply
   212,276.39x = 318,404.20 × 79,146.27
4. Step 4: Simplify right side
   212,276.39x = 25,200,504,782.33
5. Step 5: Solve for x
   x = 25,200,504,782.33/212,276.39
6. Step 6: Final answer
   x = 118,715.53