Finding the Fourth Proportional to 109,812.72, 164,758.32 and 43,215.96

Step by Step Solution

1. Step 1: Write the proportion equation
   109,812.72 : 164,758.32 = 43,215.96 : x
2. Step 2: Convert to fraction form
   109,812.72/164,758.32 = 43,215.96/x
3. Step 3: Cross multiply
   109,812.72x = 164,758.32 × 43,215.96
4. Step 4: Simplify right side
   109,812.72x = 7,120,188,966.79
5. Step 5: Solve for x
   x = 7,120,188,966.79/109,812.72
6. Step 6: Final answer
   x = 64,839.38