Finding the Fourth Proportional to 76,411.32, 105,491.52 and 50,910.96

Step by Step Solution

1. Step 1: Write the proportion equation
   76,411.32 : 105,491.52 = 50,910.96 : x
2. Step 2: Convert to fraction form
   76,411.32/105,491.52 = 50,910.96/x
3. Step 3: Cross multiply
   76,411.32x = 105,491.52 × 50,910.96
4. Step 4: Simplify right side
   76,411.32x = 5,370,674,555.06
5. Step 5: Solve for x
   x = 5,370,674,555.06/76,411.32
6. Step 6: Final answer
   x = 70,286.37