Finding the Fourth Proportional to 78,103.53, 107,799.66 and 50,913.59

Step by Step Solution

1. Step 1: Write the proportion equation
   78,103.53 : 107,799.66 = 50,913.59 : x
2. Step 2: Convert to fraction form
   78,103.53/107,799.66 = 50,913.59/x
3. Step 3: Cross multiply
   78,103.53x = 107,799.66 × 50,913.59
4. Step 4: Simplify right side
   78,103.53x = 5,488,467,152.38
5. Step 5: Solve for x
   x = 5,488,467,152.38/78,103.53
6. Step 6: Final answer
   x = 70,271.69