Finding the Fourth Proportional to 397,597.35, 596,191.71 and 117,078.15

Step by Step Solution

1. Step 1: Write the proportion equation
   397,597.35 : 596,191.71 = 117,078.15 : x
2. Step 2: Convert to fraction form
   397,597.35/596,191.71 = 117,078.15/x
3. Step 3: Cross multiply
   397,597.35x = 596,191.71 × 117,078.15
4. Step 4: Simplify right side
   397,597.35x = 69,801,022,452.14
5. Step 5: Solve for x
   x = 69,801,022,452.14/397,597.35
6. Step 6: Final answer
   x = 175,557.06