Finding the Fourth Proportional to 70,620.53, 105,832.37 and 53,069.85

Step by Step Solution

1. Step 1: Write the proportion equation
   70,620.53 : 105,832.37 = 53,069.85 : x
2. Step 2: Convert to fraction form
   70,620.53/105,832.37 = 53,069.85/x
3. Step 3: Cross multiply
   70,620.53x = 105,832.37 × 53,069.85
4. Step 4: Simplify right side
   70,620.53x = 5,616,508,133.72
5. Step 5: Solve for x
   x = 5,616,508,133.72/70,620.53
6. Step 6: Final answer
   x = 79,530.82