Finding the Fourth Proportional to 136,796.37, 188,788.50 and 76,378.89

Step by Step Solution

1. Step 1: Write the proportion equation
   136,796.37 : 188,788.50 = 76,378.89 : x
2. Step 2: Convert to fraction form
   136,796.37/188,788.50 = 76,378.89/x
3. Step 3: Cross multiply
   136,796.37x = 188,788.50 × 76,378.89
4. Step 4: Simplify right side
   136,796.37x = 14,419,456,074.77
5. Step 5: Solve for x
   x = 14,419,456,074.77/136,796.37
6. Step 6: Final answer
   x = 105,408.18