Finding the Fourth Proportional to 215,447.71, 297,097.32 and 142,825.34

Step by Step Solution

1. Step 1: Write the proportion equation
   215,447.71 : 297,097.32 = 142,825.34 : x
2. Step 2: Convert to fraction form
   215,447.71/297,097.32 = 142,825.34/x
3. Step 3: Cross multiply
   215,447.71x = 297,097.32 × 142,825.34
4. Step 4: Simplify right side
   215,447.71x = 42,433,024,256.60
5. Step 5: Solve for x
   x = 42,433,024,256.60/215,447.71
6. Step 6: Final answer
   x = 196,952.78