Finding the Fourth Proportional to 72,505.49, 108,745.28 and 46,131.89

Step by Step Solution

1. Step 1: Write the proportion equation
   72,505.49 : 108,745.28 = 46,131.89 : x
2. Step 2: Convert to fraction form
   72,505.49/108,745.28 = 46,131.89/x
3. Step 3: Cross multiply
   72,505.49x = 108,745.28 × 46,131.89
4. Step 4: Simplify right side
   72,505.49x = 5,016,625,064.32
5. Step 5: Solve for x
   x = 5,016,625,064.32/72,505.49
6. Step 6: Final answer
   x = 69,189.59