Finding the Fourth Proportional to 111,499.12, 153,865.74 and 61,198.12

Step by Step Solution

1. Step 1: Write the proportion equation
   111,499.12 : 153,865.74 = 61,198.12 : x
2. Step 2: Convert to fraction form
   111,499.12/153,865.74 = 61,198.12/x
3. Step 3: Cross multiply
   111,499.12x = 153,865.74 × 61,198.12
4. Step 4: Simplify right side
   111,499.12x = 9,416,294,020.41
5. Step 5: Solve for x
   x = 9,416,294,020.41/111,499.12
6. Step 6: Final answer
   x = 84,451.73