Finding the Fourth Proportional to 145,485.94, 200,862.83 and 99,622.32

Step by Step Solution

1. Step 1: Write the proportion equation
   145,485.94 : 200,862.83 = 99,622.32 : x
2. Step 2: Convert to fraction form
   145,485.94/200,862.83 = 99,622.32/x
3. Step 3: Cross multiply
   145,485.94x = 200,862.83 × 99,622.32
4. Step 4: Simplify right side
   145,485.94x = 20,010,421,375.42
5. Step 5: Solve for x
   x = 20,010,421,375.42/145,485.94
6. Step 6: Final answer
   x = 137,541.96