Finding the Fourth Proportional to 333,438.50, 500,158.56 and 84,120.50

Step by Step Solution

1. Step 1: Write the proportion equation
   333,438.50 : 500,158.56 = 84,120.50 : x
2. Step 2: Convert to fraction form
   333,438.50/500,158.56 = 84,120.50/x
3. Step 3: Cross multiply
   333,438.50x = 500,158.56 × 84,120.50
4. Step 4: Simplify right side
   333,438.50x = 42,073,588,146.48
5. Step 5: Solve for x
   x = 42,073,588,146.48/333,438.50
6. Step 6: Final answer
   x = 126,180.95