Finding the Fourth Proportional to 145,485.76, 200,723.52 and 88,106.72

Step by Step Solution

1. Step 1: Write the proportion equation
   145,485.76 : 200,723.52 = 88,106.72 : x
2. Step 2: Convert to fraction form
   145,485.76/200,723.52 = 88,106.72/x
3. Step 3: Cross multiply
   145,485.76x = 200,723.52 × 88,106.72
4. Step 4: Simplify right side
   145,485.76x = 17,685,090,974.05
5. Step 5: Solve for x
   x = 17,685,090,974.05/145,485.76
6. Step 6: Final answer
   x = 121,558.91