Finding the Fourth Proportional to 78,137.21, 107,807.46 and 49,068.71

Step by Step Solution

1. Step 1: Write the proportion equation
   78,137.21 : 107,807.46 = 49,068.71 : x
2. Step 2: Convert to fraction form
   78,137.21/107,807.46 = 49,068.71/x
3. Step 3: Cross multiply
   78,137.21x = 107,807.46 × 49,068.71
4. Step 4: Simplify right side
   78,137.21x = 5,289,972,451.54
5. Step 5: Solve for x
   x = 5,289,972,451.54/78,137.21
6. Step 6: Final answer
   x = 67,701.07