Finding the Fourth Proportional to 120,698.22, 166,454.55 and 75,380.34

Step by Step Solution

1. Step 1: Write the proportion equation
   120,698.22 : 166,454.55 = 75,380.34 : x
2. Step 2: Convert to fraction form
   120,698.22/166,454.55 = 75,380.34/x
3. Step 3: Cross multiply
   120,698.22x = 166,454.55 × 75,380.34
4. Step 4: Simplify right side
   120,698.22x = 12,547,400,573.55
5. Step 5: Solve for x
   x = 12,547,400,573.55/120,698.22
6. Step 6: Final answer
   x = 103,956.80