Finding the Fourth Proportional to 145,145.16, 200,300.18 and 81,483.08

Step by Step Solution

1. Step 1: Write the proportion equation
   145,145.16 : 200,300.18 = 81,483.08 : x
2. Step 2: Convert to fraction form
   145,145.16/200,300.18 = 81,483.08/x
3. Step 3: Cross multiply
   145,145.16x = 200,300.18 × 81,483.08
4. Step 4: Simplify right side
   145,145.16x = 16,321,074,182.04
5. Step 5: Solve for x
   x = 16,321,074,182.04/145,145.16
6. Step 6: Final answer
   x = 112,446.56