Finding the Fourth Proportional to 90,404.09, 124,859.78 and 61,674.42

Step by Step Solution

1. Step 1: Write the proportion equation
   90,404.09 : 124,859.78 = 61,674.42 : x
2. Step 2: Convert to fraction form
   90,404.09/124,859.78 = 61,674.42/x
3. Step 3: Cross multiply
   90,404.09x = 124,859.78 × 61,674.42
4. Step 4: Simplify right side
   90,404.09x = 7,700,654,512.83
5. Step 5: Solve for x
   x = 7,700,654,512.83/90,404.09
6. Step 6: Final answer
   x = 85,180.38