Finding the Fourth Proportional to 111,899.91, 154,417.05 and 60,912.72

Step by Step Solution

1. Step 1: Write the proportion equation
   111,899.91 : 154,417.05 = 60,912.72 : x
2. Step 2: Convert to fraction form
   111,899.91/154,417.05 = 60,912.72/x
3. Step 3: Cross multiply
   111,899.91x = 154,417.05 × 60,912.72
4. Step 4: Simplify right side
   111,899.91x = 9,405,962,529.88
5. Step 5: Solve for x
   x = 9,405,962,529.88/111,899.91
6. Step 6: Final answer
   x = 84,056.93