Finding the Fourth Proportional to 92,986.58, 128,311.89 and 55,253.54

Step by Step Solution

1. Step 1: Write the proportion equation
   92,986.58 : 128,311.89 = 55,253.54 : x
2. Step 2: Convert to fraction form
   92,986.58/128,311.89 = 55,253.54/x
3. Step 3: Cross multiply
   92,986.58x = 128,311.89 × 55,253.54
4. Step 4: Simplify right side
   92,986.58x = 7,089,686,146.59
5. Step 5: Solve for x
   x = 7,089,686,146.59/92,986.58
6. Step 6: Final answer
   x = 76,244.19