Finding the Fourth Proportional to 117,868.88, 162,662.50 and 64,157.36

Step by Step Solution

1. Step 1: Write the proportion equation
   117,868.88 : 162,662.50 = 64,157.36 : x
2. Step 2: Convert to fraction form
   117,868.88/162,662.50 = 64,157.36/x
3. Step 3: Cross multiply
   117,868.88x = 162,662.50 × 64,157.36
4. Step 4: Simplify right side
   117,868.88x = 10,435,996,571
5. Step 5: Solve for x
   x = 10,435,996,571/117,868.88
6. Step 6: Final answer
   x = 88,539.03