Finding the Fourth Proportional to 72,134.94, 99,383.28 and 50,310.36

Step by Step Solution

1. Step 1: Write the proportion equation
   72,134.94 : 99,383.28 = 50,310.36 : x
2. Step 2: Convert to fraction form
   72,134.94/99,383.28 = 50,310.36/x
3. Step 3: Cross multiply
   72,134.94x = 99,383.28 × 50,310.36
4. Step 4: Simplify right side
   72,134.94x = 5,000,008,594.78
5. Step 5: Solve for x
   x = 5,000,008,594.78/72,134.94
6. Step 6: Final answer
   x = 69,314.66