Finding the Fourth Proportional to 117,908.20, 162,716.26 and 64,196.16

Step by Step Solution

1. Step 1: Write the proportion equation
   117,908.20 : 162,716.26 = 64,196.16 : x
2. Step 2: Convert to fraction form
   117,908.20/162,716.26 = 64,196.16/x
3. Step 3: Cross multiply
   117,908.20x = 162,716.26 × 64,196.16
4. Step 4: Simplify right side
   117,908.20x = 10,445,759,061.56
5. Step 5: Solve for x
   x = 10,445,759,061.56/117,908.20
6. Step 6: Final answer
   x = 88,592.30