Finding the Fourth Proportional to 77,091.34, 106,403.83 and 50,187

Step by Step Solution

1. Step 1: Write the proportion equation
   77,091.34 : 106,403.83 = 50,187 : x
2. Step 2: Convert to fraction form
   77,091.34/106,403.83 = 50,187/x
3. Step 3: Cross multiply
   77,091.34x = 106,403.83 × 50,187
4. Step 4: Simplify right side
   77,091.34x = 5,340,089,016.21
5. Step 5: Solve for x
   x = 5,340,089,016.21/77,091.34
6. Step 6: Final answer
   x = 69,269.64