Finding the Fourth Proportional to 117,172.56, 161,697.33 and 63,456.36

Step by Step Solution

1. Step 1: Write the proportion equation
   117,172.56 : 161,697.33 = 63,456.36 : x
2. Step 2: Convert to fraction form
   117,172.56/161,697.33 = 63,456.36/x
3. Step 3: Cross multiply
   117,172.56x = 161,697.33 × 63,456.36
4. Step 4: Simplify right side
   117,172.56x = 10,260,723,983.52
5. Step 5: Solve for x
   x = 10,260,723,983.52/117,172.56
6. Step 6: Final answer
   x = 87,569.34