Finding the Fourth Proportional to 216,064.74, 298,184.31 and 120,590.04

Step by Step Solution

1. Step 1: Write the proportion equation
   216,064.74 : 298,184.31 = 120,590.04 : x
2. Step 2: Convert to fraction form
   216,064.74/298,184.31 = 120,590.04/x
3. Step 3: Cross multiply
   216,064.74x = 298,184.31 × 120,590.04
4. Step 4: Simplify right side
   216,064.74x = 35,958,057,870.27
5. Step 5: Solve for x
   x = 35,958,057,870.27/216,064.74
6. Step 6: Final answer
   x = 166,422.61