Finding the Fourth Proportional to 161,648.33, 223,081.58 and 90,028.35

Step by Step Solution

1. Step 1: Write the proportion equation
   161,648.33 : 223,081.58 = 90,028.35 : x
2. Step 2: Convert to fraction form
   161,648.33/223,081.58 = 90,028.35/x
3. Step 3: Cross multiply
   161,648.33x = 223,081.58 × 90,028.35
4. Step 4: Simplify right side
   161,648.33x = 20,083,666,787.86
5. Step 5: Solve for x
   x = 20,083,666,787.86/161,648.33
6. Step 6: Final answer
   x = 124,242.96