Finding the Fourth Proportional to 261,012.83, 391,493.93 and 83,472.17

Step by Step Solution

1. Step 1: Write the proportion equation
   261,012.83 : 391,493.93 = 83,472.17 : x
2. Step 2: Convert to fraction form
   261,012.83/391,493.93 = 83,472.17/x
3. Step 3: Cross multiply
   261,012.83x = 391,493.93 × 83,472.17
4. Step 4: Simplify right side
   261,012.83x = 32,678,845,504.10
5. Step 5: Solve for x
   x = 32,678,845,504.10/261,012.83
6. Step 6: Final answer
   x = 125,200.15