Finding the Fourth Proportional to 309,985.56, 465,026.94 and 132,493.50

Step by Step Solution

1. Step 1: Write the proportion equation
   309,985.56 : 465,026.94 = 132,493.50 : x
2. Step 2: Convert to fraction form
   309,985.56/465,026.94 = 132,493.50/x
3. Step 3: Cross multiply
   309,985.56x = 465,026.94 × 132,493.50
4. Step 4: Simplify right side
   309,985.56x = 61,613,046,874.89
5. Step 5: Solve for x
   x = 61,613,046,874.89/309,985.56
6. Step 6: Final answer
   x = 198,761.02