Finding the Fourth Proportional to 76,498.53, 105,534.02 and 50,980.05

Step by Step Solution

1. Step 1: Write the proportion equation
   76,498.53 : 105,534.02 = 50,980.05 : x
2. Step 2: Convert to fraction form
   76,498.53/105,534.02 = 50,980.05/x
3. Step 3: Cross multiply
   76,498.53x = 105,534.02 × 50,980.05
4. Step 4: Simplify right side
   76,498.53x = 5,380,129,361.40
5. Step 5: Solve for x
   x = 5,380,129,361.40/76,498.53
6. Step 6: Final answer
   x = 70,329.84