Finding the Fourth Proportional to 283,016.52, 390,573.18 and 155,701.80

Step by Step Solution

1. Step 1: Write the proportion equation
   283,016.52 : 390,573.18 = 155,701.80 : x
2. Step 2: Convert to fraction form
   283,016.52/390,573.18 = 155,701.80/x
3. Step 3: Cross multiply
   283,016.52x = 390,573.18 × 155,701.80
4. Step 4: Simplify right side
   283,016.52x = 60,812,947,157.72
5. Step 5: Solve for x
   x = 60,812,947,157.72/283,016.52
6. Step 6: Final answer
   x = 214,874.20