Finding the Fourth Proportional to 117,871.37, 162,662.51 and 64,156.77

Step by Step Solution

1. Step 1: Write the proportion equation
   117,871.37 : 162,662.51 = 64,156.77 : x
2. Step 2: Convert to fraction form
   117,871.37/162,662.51 = 64,156.77/x
3. Step 3: Cross multiply
   117,871.37x = 162,662.51 × 64,156.77
4. Step 4: Simplify right side
   117,871.37x = 10,435,900,920.91
5. Step 5: Solve for x
   x = 10,435,900,920.91/117,871.37
6. Step 6: Final answer
   x = 88,536.35