Finding the Fourth Proportional to 78,273.68, 107,977.72 and 49,544.80

Step by Step Solution

1. Step 1: Write the proportion equation
   78,273.68 : 107,977.72 = 49,544.80 : x
2. Step 2: Convert to fraction form
   78,273.68/107,977.72 = 49,544.80/x
3. Step 3: Cross multiply
   78,273.68x = 107,977.72 × 49,544.80
4. Step 4: Simplify right side
   78,273.68x = 5,349,734,541.86
5. Step 5: Solve for x
   x = 5,349,734,541.86/78,273.68
6. Step 6: Final answer
   x = 68,346.53