Finding the Fourth Proportional to 72,725.04, 108,985.50 and 50,505.12

Step by Step Solution

1. Step 1: Write the proportion equation
   72,725.04 : 108,985.50 = 50,505.12 : x
2. Step 2: Convert to fraction form
   72,725.04/108,985.50 = 50,505.12/x
3. Step 3: Cross multiply
   72,725.04x = 108,985.50 × 50,505.12
4. Step 4: Simplify right side
   72,725.04x = 5,504,325,755.76
5. Step 5: Solve for x
   x = 5,504,325,755.76/72,725.04
6. Step 6: Final answer
   x = 75,686.80