Finding the Fourth Proportional to 117,730.72, 162,467.52 and 64,015.68

Step by Step Solution

1. Step 1: Write the proportion equation
   117,730.72 : 162,467.52 = 64,015.68 : x
2. Step 2: Convert to fraction form
   117,730.72/162,467.52 = 64,015.68/x
3. Step 3: Cross multiply
   117,730.72x = 162,467.52 × 64,015.68
4. Step 4: Simplify right side
   117,730.72x = 10,400,468,770.71
5. Step 5: Solve for x
   x = 10,400,468,770.71/117,730.72
6. Step 6: Final answer
   x = 88,341.16