Finding the Fourth Proportional to 283,443.03, 391,151.38 and 156,118.62

Step by Step Solution

1. Step 1: Write the proportion equation
   283,443.03 : 391,151.38 = 156,118.62 : x
2. Step 2: Convert to fraction form
   283,443.03/391,151.38 = 156,118.62/x
3. Step 3: Cross multiply
   283,443.03x = 391,151.38 × 156,118.62
4. Step 4: Simplify right side
   283,443.03x = 61,066,015,025.94
5. Step 5: Solve for x
   x = 61,066,015,025.94/283,443.03
6. Step 6: Final answer
   x = 215,443.70