Finding the Fourth Proportional to 107,128.56, 160,747.50 and 43,997.16

Step by Step Solution

1. Step 1: Write the proportion equation
   107,128.56 : 160,747.50 = 43,997.16 : x
2. Step 2: Convert to fraction form
   107,128.56/160,747.50 = 43,997.16/x
3. Step 3: Cross multiply
   107,128.56x = 160,747.50 × 43,997.16
4. Step 4: Simplify right side
   107,128.56x = 7,072,433,477.10
5. Step 5: Solve for x
   x = 7,072,433,477.10/107,128.56
6. Step 6: Final answer
   x = 66,018.19