Finding the Fourth Proportional to 102,131.58, 153,123.57 and 68,768.94

Step by Step Solution

1. Step 1: Write the proportion equation
   102,131.58 : 153,123.57 = 68,768.94 : x
2. Step 2: Convert to fraction form
   102,131.58/153,123.57 = 68,768.94/x
3. Step 3: Cross multiply
   102,131.58x = 153,123.57 × 68,768.94
4. Step 4: Simplify right side
   102,131.58x = 10,530,145,597.92
5. Step 5: Solve for x
   x = 10,530,145,597.92/102,131.58
6. Step 6: Final answer
   x = 103,103.72