Finding the Fourth Proportional to 79,105.84, 109,138.90 and 45,089.79

Step by Step Solution

1. Step 1: Write the proportion equation
   79,105.84 : 109,138.90 = 45,089.79 : x
2. Step 2: Convert to fraction form
   79,105.84/109,138.90 = 45,089.79/x
3. Step 3: Cross multiply
   79,105.84x = 109,138.90 × 45,089.79
4. Step 4: Simplify right side
   79,105.84x = 4,921,050,081.83
5. Step 5: Solve for x
   x = 4,921,050,081.83/79,105.84
6. Step 6: Final answer
   x = 62,208.43