Finding the Fourth Proportional to 236,681.72, 355,025.72 and 78,910.24

Step by Step Solution

1. Step 1: Write the proportion equation
   236,681.72 : 355,025.72 = 78,910.24 : x
2. Step 2: Convert to fraction form
   236,681.72/355,025.72 = 78,910.24/x
3. Step 3: Cross multiply
   236,681.72x = 355,025.72 × 78,910.24
4. Step 4: Simplify right side
   236,681.72x = 28,015,164,771.37
5. Step 5: Solve for x
   x = 28,015,164,771.37/236,681.72
6. Step 6: Final answer
   x = 118,366.41