Finding the Fourth Proportional to 78,216.73, 107,899.31 and 49,487.94

Step by Step Solution

1. Step 1: Write the proportion equation
   78,216.73 : 107,899.31 = 49,487.94 : x
2. Step 2: Convert to fraction form
   78,216.73/107,899.31 = 49,487.94/x
3. Step 3: Cross multiply
   78,216.73x = 107,899.31 × 49,487.94
4. Step 4: Simplify right side
   78,216.73x = 5,339,714,703.04
5. Step 5: Solve for x
   x = 5,339,714,703.04/78,216.73
6. Step 6: Final answer
   x = 68,268.19