Finding the Fourth Proportional to 78,934.47, 108,931.71 and 47,121.84

Step by Step Solution

1. Step 1: Write the proportion equation
   78,934.47 : 108,931.71 = 47,121.84 : x
2. Step 2: Convert to fraction form
   78,934.47/108,931.71 = 47,121.84/x
3. Step 3: Cross multiply
   78,934.47x = 108,931.71 × 47,121.84
4. Step 4: Simplify right side
   78,934.47x = 5,133,062,609.55
5. Step 5: Solve for x
   x = 5,133,062,609.55/78,934.47
6. Step 6: Final answer
   x = 65,029.42