Finding the Fourth Proportional to 145,276, 200,491.82 and 88,698.31

Step by Step Solution

1. Step 1: Write the proportion equation
   145,276 : 200,491.82 = 88,698.31 : x
2. Step 2: Convert to fraction form
   145,276/200,491.82 = 88,698.31/x
3. Step 3: Cross multiply
   145,276x = 200,491.82 × 88,698.31
4. Step 4: Simplify right side
   145,276x = 17,783,285,159.33
5. Step 5: Solve for x
   x = 17,783,285,159.33/145,276
6. Step 6: Final answer
   x = 122,410.34