Finding the Fourth Proportional to 111,199.75, 153,449.57 and 65,253.23

Step by Step Solution

1. Step 1: Write the proportion equation
   111,199.75 : 153,449.57 = 65,253.23 : x
2. Step 2: Convert to fraction form
   111,199.75/153,449.57 = 65,253.23/x
3. Step 3: Cross multiply
   111,199.75x = 153,449.57 × 65,253.23
4. Step 4: Simplify right side
   111,199.75x = 10,013,080,084.61
5. Step 5: Solve for x
   x = 10,013,080,084.61/111,199.75
6. Step 6: Final answer
   x = 90,045.89