Finding the Fourth Proportional to 78,393.88, 108,142.12 and 49,662.88

Step by Step Solution

1. Step 1: Write the proportion equation
   78,393.88 : 108,142.12 = 49,662.88 : x
2. Step 2: Convert to fraction form
   78,393.88/108,142.12 = 49,662.88/x
3. Step 3: Cross multiply
   78,393.88x = 108,142.12 × 49,662.88
4. Step 4: Simplify right side
   78,393.88x = 5,370,649,128.51
5. Step 5: Solve for x
   x = 5,370,649,128.51/78,393.88
6. Step 6: Final answer
   x = 68,508.53