Finding the Fourth Proportional to 111,499.20, 153,870.03 and 60,512.37

Step by Step Solution

1. Step 1: Write the proportion equation
   111,499.20 : 153,870.03 = 60,512.37 : x
2. Step 2: Convert to fraction form
   111,499.20/153,870.03 = 60,512.37/x
3. Step 3: Cross multiply
   111,499.20x = 153,870.03 × 60,512.37
4. Step 4: Simplify right side
   111,499.20x = 9,311,040,187.27
5. Step 5: Solve for x
   x = 9,311,040,187.27/111,499.20
6. Step 6: Final answer
   x = 83,507.69