Finding the Fourth Proportional to 109,899.30, 164,892.15 and 43,328.10

Step by Step Solution

1. Step 1: Write the proportion equation
   109,899.30 : 164,892.15 = 43,328.10 : x
2. Step 2: Convert to fraction form
   109,899.30/164,892.15 = 43,328.10/x
3. Step 3: Cross multiply
   109,899.30x = 164,892.15 × 43,328.10
4. Step 4: Simplify right side
   109,899.30x = 7,144,463,564.42
5. Step 5: Solve for x
   x = 7,144,463,564.42/109,899.30
6. Step 6: Final answer
   x = 65,009.18