Finding the Fourth Proportional to 78,803.28, 108,732.60 and 50,134.32

Step by Step Solution

1. Step 1: Write the proportion equation
   78,803.28 : 108,732.60 = 50,134.32 : x
2. Step 2: Convert to fraction form
   78,803.28/108,732.60 = 50,134.32/x
3. Step 3: Cross multiply
   78,803.28x = 108,732.60 × 50,134.32
4. Step 4: Simplify right side
   78,803.28x = 5,451,234,962.83
5. Step 5: Solve for x
   x = 5,451,234,962.83/78,803.28
6. Step 6: Final answer
   x = 69,175.23