Finding the Fourth Proportional to 230,298.48, 345,418.56 and 90,155.52

Step by Step Solution

1. Step 1: Write the proportion equation
   230,298.48 : 345,418.56 = 90,155.52 : x
2. Step 2: Convert to fraction form
   230,298.48/345,418.56 = 90,155.52/x
3. Step 3: Cross multiply
   230,298.48x = 345,418.56 × 90,155.52
4. Step 4: Simplify right side
   230,298.48x = 31,141,389,894.45
5. Step 5: Solve for x
   x = 31,141,389,894.45/230,298.48
6. Step 6: Final answer
   x = 135,221.86