Finding the Fourth Proportional to 79,636.32, 109,892.88 and 45,644.40

Step by Step Solution

1. Step 1: Write the proportion equation
   79,636.32 : 109,892.88 = 45,644.40 : x
2. Step 2: Convert to fraction form
   79,636.32/109,892.88 = 45,644.40/x
3. Step 3: Cross multiply
   79,636.32x = 109,892.88 × 45,644.40
4. Step 4: Simplify right side
   79,636.32x = 5,015,994,571.87
5. Step 5: Solve for x
   x = 5,015,994,571.87/79,636.32
6. Step 6: Final answer
   x = 62,986.27