Finding the Fourth Proportional to 144,810.57, 199,837.98 and 81,148.35

Step by Step Solution

1. Step 1: Write the proportion equation
   144,810.57 : 199,837.98 = 81,148.35 : x
2. Step 2: Convert to fraction form
   144,810.57/199,837.98 = 81,148.35/x
3. Step 3: Cross multiply
   144,810.57x = 199,837.98 × 81,148.35
4. Step 4: Simplify right side
   144,810.57x = 16,216,522,344.33
5. Step 5: Solve for x
   x = 16,216,522,344.33/144,810.57
6. Step 6: Final answer
   x = 111,984.38