Finding the Fourth Proportional to 215,198,713.52, 297,065,858.72 and 144,675,224.76

Step by Step Solution

1. Step 1: Write the proportion equation
   215,198,713.52 : 297,065,858.72 = 144,675,224.76 : x
2. Step 2: Convert to fraction form
   215,198,713.52/297,065,858.72 = 144,675,224.76/x
3. Step 3: Cross multiply
   215,198,713.52x = 297,065,858.72 × 144,675,224.76
4. Step 4: Simplify right side
   215,198,713.52x = 42,978,069,879,200,096
5. Step 5: Solve for x
   x = 42,978,069,879,200,096/215,198,713.52
6. Step 6: Final answer
   x = 199,713,414.53