Finding the Fourth Proportional to 111,960.48, 154,499.76 and 61,649.76

Step by Step Solution

1. Step 1: Write the proportion equation
   111,960.48 : 154,499.76 = 61,649.76 : x
2. Step 2: Convert to fraction form
   111,960.48/154,499.76 = 61,649.76/x
3. Step 3: Cross multiply
   111,960.48x = 154,499.76 × 61,649.76
4. Step 4: Simplify right side
   111,960.48x = 9,524,873,124.06
5. Step 5: Solve for x
   x = 9,524,873,124.06/111,960.48
6. Step 6: Final answer
   x = 85,073.53