Finding the Fourth Proportional to 117,888.78, 162,688.59 and 64,175.34

Step by Step Solution

1. Step 1: Write the proportion equation
   117,888.78 : 162,688.59 = 64,175.34 : x
2. Step 2: Convert to fraction form
   117,888.78/162,688.59 = 64,175.34/x
3. Step 3: Cross multiply
   117,888.78x = 162,688.59 × 64,175.34
4. Step 4: Simplify right side
   117,888.78x = 10,440,595,577.37
5. Step 5: Solve for x
   x = 10,440,595,577.37/117,888.78
6. Step 6: Final answer
   x = 88,563.10