Finding the Fourth Proportional to 79,689.69, 109,972.17 and 45,699.45

Step by Step Solution

1. Step 1: Write the proportion equation
   79,689.69 : 109,972.17 = 45,699.45 : x
2. Step 2: Convert to fraction form
   79,689.69/109,972.17 = 45,699.45/x
3. Step 3: Cross multiply
   79,689.69x = 109,972.17 × 45,699.45
4. Step 4: Simplify right side
   79,689.69x = 5,025,667,959.24
5. Step 5: Solve for x
   x = 5,025,667,959.24/79,689.69
6. Step 6: Final answer
   x = 63,065.48