Finding the Fourth Proportional to 72,307.68, 99,687.43 and 50,768.56

Step by Step Solution

1. Step 1: Write the proportion equation
   72,307.68 : 99,687.43 = 50,768.56 : x
2. Step 2: Convert to fraction form
   72,307.68/99,687.43 = 50,768.56/x
3. Step 3: Cross multiply
   72,307.68x = 99,687.43 × 50,768.56
4. Step 4: Simplify right side
   72,307.68x = 5,060,987,173.70
5. Step 5: Solve for x
   x = 5,060,987,173.70/72,307.68
6. Step 6: Final answer
   x = 69,992.39