Finding the Fourth Proportional to 282,833.05, 390,316.28 and 153,778.89

Step by Step Solution

1. Step 1: Write the proportion equation
   282,833.05 : 390,316.28 = 153,778.89 : x
2. Step 2: Convert to fraction form
   282,833.05/390,316.28 = 153,778.89/x
3. Step 3: Cross multiply
   282,833.05x = 390,316.28 × 153,778.89
4. Step 4: Simplify right side
   282,833.05x = 60,022,404,287.33
5. Step 5: Solve for x
   x = 60,022,404,287.33/282,833.05
6. Step 6: Final answer
   x = 212,218.50