Finding the Fourth Proportional to 77,291.27, 106,608.59 and 54,369.69

Step by Step Solution

1. Step 1: Write the proportion equation
   77,291.27 : 106,608.59 = 54,369.69 : x
2. Step 2: Convert to fraction form
   77,291.27/106,608.59 = 54,369.69/x
3. Step 3: Cross multiply
   77,291.27x = 106,608.59 × 54,369.69
4. Step 4: Simplify right side
   77,291.27x = 5,796,275,827.72
5. Step 5: Solve for x
   x = 5,796,275,827.72/77,291.27
6. Step 6: Final answer
   x = 74,992.63