Finding the Fourth Proportional to 249,705.82, 374,610.57 and 83,489.50

Step by Step Solution

1. Step 1: Write the proportion equation
   249,705.82 : 374,610.57 = 83,489.50 : x
2. Step 2: Convert to fraction form
   249,705.82/374,610.57 = 83,489.50/x
3. Step 3: Cross multiply
   249,705.82x = 374,610.57 × 83,489.50
4. Step 4: Simplify right side
   249,705.82x = 31,276,049,184.02
5. Step 5: Solve for x
   x = 31,276,049,184.02/249,705.82
6. Step 6: Final answer
   x = 125,251.58