Finding the Fourth Proportional to 283,033.55, 390,588.83 and 153,974.83

Step by Step Solution

1. Step 1: Write the proportion equation
   283,033.55 : 390,588.83 = 153,974.83 : x
2. Step 2: Convert to fraction form
   283,033.55/390,588.83 = 153,974.83/x
3. Step 3: Cross multiply
   283,033.55x = 390,588.83 × 153,974.83
4. Step 4: Simplify right side
   283,033.55x = 60,140,848,699.15
5. Step 5: Solve for x
   x = 60,140,848,699.15/283,033.55
6. Step 6: Final answer
   x = 212,486.65