Finding the Fourth Proportional to 465,146.73, 696,785.89 and 212,079.10

Step by Step Solution

1. Step 1: Write the proportion equation
   465,146.73 : 696,785.89 = 212,079.10 : x
2. Step 2: Convert to fraction form
   465,146.73/696,785.89 = 212,079.10/x
3. Step 3: Cross multiply
   465,146.73x = 696,785.89 × 212,079.10
4. Step 4: Simplify right side
   465,146.73x = 147,773,724,443.90
5. Step 5: Solve for x
   x = 147,773,724,443.90/465,146.73
6. Step 6: Final answer
   x = 317,692.71