Finding the Fourth Proportional to 91,981.94, 126,936.17 and 55,682.87

Step by Step Solution

1. Step 1: Write the proportion equation
   91,981.94 : 126,936.17 = 55,682.87 : x
2. Step 2: Convert to fraction form
   91,981.94/126,936.17 = 55,682.87/x
3. Step 3: Cross multiply
   91,981.94x = 126,936.17 × 55,682.87
4. Step 4: Simplify right side
   91,981.94x = 7,068,169,339.31
5. Step 5: Solve for x
   x = 7,068,169,339.31/91,981.94
6. Step 6: Final answer
   x = 76,843.02