Finding the Fourth Proportional to 72,053.89, 99,421.27 and 50,609.16

Step by Step Solution

1. Step 1: Write the proportion equation
   72,053.89 : 99,421.27 = 50,609.16 : x
2. Step 2: Convert to fraction form
   72,053.89/99,421.27 = 50,609.16/x
3. Step 3: Cross multiply
   72,053.89x = 99,421.27 × 50,609.16
4. Step 4: Simplify right side
   72,053.89x = 5,031,626,834.31
5. Step 5: Solve for x
   x = 5,031,626,834.31/72,053.89
6. Step 6: Final answer
   x = 69,831.44