Finding the Fourth Proportional to 117,724.36, 162,457.68 and 64,010.72

Step by Step Solution

1. Step 1: Write the proportion equation
   117,724.36 : 162,457.68 = 64,010.72 : x
2. Step 2: Convert to fraction form
   117,724.36/162,457.68 = 64,010.72/x
3. Step 3: Cross multiply
   117,724.36x = 162,457.68 × 64,010.72
4. Step 4: Simplify right side
   117,724.36x = 10,399,033,066.33
5. Step 5: Solve for x
   x = 10,399,033,066.33/117,724.36
6. Step 6: Final answer
   x = 88,333.74