Finding the Fourth Proportional to 111,976.89, 154,529.79 and 60,991.98

Step by Step Solution

1. Step 1: Write the proportion equation
   111,976.89 : 154,529.79 = 60,991.98 : x
2. Step 2: Convert to fraction form
   111,976.89/154,529.79 = 60,991.98/x
3. Step 3: Cross multiply
   111,976.89x = 154,529.79 × 60,991.98
4. Step 4: Simplify right side
   111,976.89x = 9,425,077,861.08
5. Step 5: Solve for x
   x = 9,425,077,861.08/111,976.89
6. Step 6: Final answer
   x = 84,169.85