Finding the Fourth Proportional to 236,401.30, 354,634.35 and 78,613.30

Step by Step Solution

1. Step 1: Write the proportion equation
   236,401.30 : 354,634.35 = 78,613.30 : x
2. Step 2: Convert to fraction form
   236,401.30/354,634.35 = 78,613.30/x
3. Step 3: Cross multiply
   236,401.30x = 354,634.35 × 78,613.30
4. Step 4: Simplify right side
   236,401.30x = 27,878,976,546.86
5. Step 5: Solve for x
   x = 27,878,976,546.86/236,401.30
6. Step 6: Final answer
   x = 117,930.72