Finding the Fourth Proportional to 76,274.91, 105,142.71 and 53,550.15

Step by Step Solution

1. Step 1: Write the proportion equation
   76,274.91 : 105,142.71 = 53,550.15 : x
2. Step 2: Convert to fraction form
   76,274.91/105,142.71 = 53,550.15/x
3. Step 3: Cross multiply
   76,274.91x = 105,142.71 × 53,550.15
4. Step 4: Simplify right side
   76,274.91x = 5,630,407,891.91
5. Step 5: Solve for x
   x = 5,630,407,891.91/76,274.91
6. Step 6: Final answer
   x = 73,817.30