Finding the Fourth Proportional to 380,752.72, 570,528.25 and 140,535.99

Step by Step Solution

1. Step 1: Write the proportion equation
   380,752.72 : 570,528.25 = 140,535.99 : x
2. Step 2: Convert to fraction form
   380,752.72/570,528.25 = 140,535.99/x
3. Step 3: Cross multiply
   380,752.72x = 570,528.25 × 140,535.99
4. Step 4: Simplify right side
   380,752.72x = 80,179,752,085.38
5. Step 5: Solve for x
   x = 80,179,752,085.38/380,752.72
6. Step 6: Final answer
   x = 210,582.22