Finding the Fourth Proportional to 83,645.97, 115,431.50 and 45,405.48

Step by Step Solution

1. Step 1: Write the proportion equation
   83,645.97 : 115,431.50 = 45,405.48 : x
2. Step 2: Convert to fraction form
   83,645.97/115,431.50 = 45,405.48/x
3. Step 3: Cross multiply
   83,645.97x = 115,431.50 × 45,405.48
4. Step 4: Simplify right side
   83,645.97x = 5,241,222,437.59
5. Step 5: Solve for x
   x = 5,241,222,437.59/83,645.97
6. Step 6: Final answer
   x = 62,659.59