Finding the Fourth Proportional to 109,910.10, 164,865.15 and 43,328.10

Step by Step Solution

1. Step 1: Write the proportion equation
   109,910.10 : 164,865.15 = 43,328.10 : x
2. Step 2: Convert to fraction form
   109,910.10/164,865.15 = 43,328.10/x
3. Step 3: Cross multiply
   109,910.10x = 164,865.15 × 43,328.10
4. Step 4: Simplify right side
   109,910.10x = 7,143,293,705.72
5. Step 5: Solve for x
   x = 7,143,293,705.72/109,910.10
6. Step 6: Final answer
   x = 64,992.15