Finding the Fourth Proportional to 145,663.57, 201,025.83 and 88,305.31

Step by Step Solution

1. Step 1: Write the proportion equation
   145,663.57 : 201,025.83 = 88,305.31 : x
2. Step 2: Convert to fraction form
   145,663.57/201,025.83 = 88,305.31/x
3. Step 3: Cross multiply
   145,663.57x = 201,025.83 × 88,305.31
4. Step 4: Simplify right side
   145,663.57x = 17,751,648,236.16
5. Step 5: Solve for x
   x = 17,751,648,236.16/145,663.57
6. Step 6: Final answer
   x = 121,867.45