Finding the Fourth Proportional to 103,053.48, 154,398.69 and 90,260.52

Step by Step Solution

1. Step 1: Write the proportion equation
   103,053.48 : 154,398.69 = 90,260.52 : x
2. Step 2: Convert to fraction form
   103,053.48/154,398.69 = 90,260.52/x
3. Step 3: Cross multiply
   103,053.48x = 154,398.69 × 90,260.52
4. Step 4: Simplify right side
   103,053.48x = 13,936,106,046.72
5. Step 5: Solve for x
   x = 13,936,106,046.72/103,053.48
6. Step 6: Final answer
   x = 135,231.78