Finding the Fourth Proportional to 283,443.86, 391,152.50 and 156,119.46

Step by Step Solution

1. Step 1: Write the proportion equation
   283,443.86 : 391,152.50 = 156,119.46 : x
2. Step 2: Convert to fraction form
   283,443.86/391,152.50 = 156,119.46/x
3. Step 3: Cross multiply
   283,443.86x = 391,152.50 × 156,119.46
4. Step 4: Simplify right side
   283,443.86x = 61,066,515,121.89
5. Step 5: Solve for x
   x = 61,066,515,121.89/283,443.86
6. Step 6: Final answer
   x = 215,444.83