Finding the Fourth Proportional to 117,836.78, 162,613.38 and 64,120.88

Step by Step Solution

1. Step 1: Write the proportion equation
   117,836.78 : 162,613.38 = 64,120.88 : x
2. Step 2: Convert to fraction form
   117,836.78/162,613.38 = 64,120.88/x
3. Step 3: Cross multiply
   117,836.78x = 162,613.38 × 64,120.88
4. Step 4: Simplify right side
   117,836.78x = 10,426,913,025.37
5. Step 5: Solve for x
   x = 10,426,913,025.37/117,836.78
6. Step 6: Final answer
   x = 88,486.07