Finding the Fourth Proportional to 73,145.89, 109,721 and 50,634.37

Step by Step Solution

1. Step 1: Write the proportion equation
   73,145.89 : 109,721 = 50,634.37 : x
2. Step 2: Convert to fraction form
   73,145.89/109,721 = 50,634.37/x
3. Step 3: Cross multiply
   73,145.89x = 109,721 × 50,634.37
4. Step 4: Simplify right side
   73,145.89x = 5,555,653,710.77
5. Step 5: Solve for x
   x = 5,555,653,710.77/73,145.89
6. Step 6: Final answer
   x = 75,953.05