Finding the Fourth Proportional to 298,659.50, 447,833.72 and 140,845.58

Step by Step Solution

1. Step 1: Write the proportion equation
   298,659.50 : 447,833.72 = 140,845.58 : x
2. Step 2: Convert to fraction form
   298,659.50/447,833.72 = 140,845.58/x
3. Step 3: Cross multiply
   298,659.50x = 447,833.72 × 140,845.58
4. Step 4: Simplify right side
   298,659.50x = 63,075,400,036.96
5. Step 5: Solve for x
   x = 63,075,400,036.96/298,659.50
6. Step 6: Final answer
   x = 211,195.02