Finding the Fourth Proportional to 216,019.82, 298,108.42 and 120,531.90

Step by Step Solution

1. Step 1: Write the proportion equation
   216,019.82 : 298,108.42 = 120,531.90 : x
2. Step 2: Convert to fraction form
   216,019.82/298,108.42 = 120,531.90/x
3. Step 3: Cross multiply
   216,019.82x = 298,108.42 × 120,531.90
4. Step 4: Simplify right side
   216,019.82x = 35,931,574,268.60
5. Step 5: Solve for x
   x = 35,931,574,268.60/216,019.82
6. Step 6: Final answer
   x = 166,334.62