Finding the Fourth Proportional to 78,077.88, 107,635.50 and 55,683

Step by Step Solution

1. Step 1: Write the proportion equation
   78,077.88 : 107,635.50 = 55,683 : x
2. Step 2: Convert to fraction form
   78,077.88/107,635.50 = 55,683/x
3. Step 3: Cross multiply
   78,077.88x = 107,635.50 × 55,683
4. Step 4: Simplify right side
   78,077.88x = 5,993,467,546.50
5. Step 5: Solve for x
   x = 5,993,467,546.50/78,077.88
6. Step 6: Final answer
   x = 76,762.68