Finding the Fourth Proportional to 117,074.03, 175,610.78 and 90,458.69

Step by Step Solution

1. Step 1: Write the proportion equation
   117,074.03 : 175,610.78 = 90,458.69 : x
2. Step 2: Convert to fraction form
   117,074.03/175,610.78 = 90,458.69/x
3. Step 3: Cross multiply
   117,074.03x = 175,610.78 × 90,458.69
4. Step 4: Simplify right side
   117,074.03x = 15,885,520,117.55
5. Step 5: Solve for x
   x = 15,885,520,117.55/117,074.03
6. Step 6: Final answer
   x = 135,687.83