Finding the Fourth Proportional to 145,144.72, 200,321.58 and 88,588.96

Step by Step Solution

1. Step 1: Write the proportion equation
   145,144.72 : 200,321.58 = 88,588.96 : x
2. Step 2: Convert to fraction form
   145,144.72/200,321.58 = 88,588.96/x
3. Step 3: Cross multiply
   145,144.72x = 200,321.58 × 88,588.96
4. Step 4: Simplify right side
   145,144.72x = 17,746,280,437.76
5. Step 5: Solve for x
   x = 17,746,280,437.76/145,144.72
6. Step 6: Final answer
   x = 122,266.11