Finding the Fourth Proportional to 102,923, 142,033.74 and 55,819

Step by Step Solution

1. Step 1: Write the proportion equation
   102,923 : 142,033.74 = 55,819 : x
2. Step 2: Convert to fraction form
   102,923/142,033.74 = 55,819/x
3. Step 3: Cross multiply
   102,923x = 142,033.74 × 55,819
4. Step 4: Simplify right side
   102,923x = 7,928,181,333.06
5. Step 5: Solve for x
   x = 7,928,181,333.06/102,923
6. Step 6: Final answer
   x = 77,030.22