Finding the Fourth Proportional to 76,482.80, 105,634.56 and 50,947.10

Step by Step Solution

1. Step 1: Write the proportion equation
   76,482.80 : 105,634.56 = 50,947.10 : x
2. Step 2: Convert to fraction form
   76,482.80/105,634.56 = 50,947.10/x
3. Step 3: Cross multiply
   76,482.80x = 105,634.56 × 50,947.10
4. Step 4: Simplify right side
   76,482.80x = 5,381,774,491.78
5. Step 5: Solve for x
   x = 5,381,774,491.78/76,482.80
6. Step 6: Final answer
   x = 70,365.81