Finding the Fourth Proportional to 115,196.49, 172,809.36 and 45,066.69

Step by Step Solution

1. Step 1: Write the proportion equation
   115,196.49 : 172,809.36 = 45,066.69 : x
2. Step 2: Convert to fraction form
   115,196.49/172,809.36 = 45,066.69/x
3. Step 3: Cross multiply
   115,196.49x = 172,809.36 × 45,066.69
4. Step 4: Simplify right side
   115,196.49x = 7,787,945,856.22
5. Step 5: Solve for x
   x = 7,787,945,856.22/115,196.49
6. Step 6: Final answer
   x = 67,605.76