Finding the Fourth Proportional to 215,414.22, 297,078.12 and 134,849.10

Step by Step Solution

1. Step 1: Write the proportion equation
   215,414.22 : 297,078.12 = 134,849.10 : x
2. Step 2: Convert to fraction form
   215,414.22/297,078.12 = 134,849.10/x
3. Step 3: Cross multiply
   215,414.22x = 297,078.12 × 134,849.10
4. Step 4: Simplify right side
   215,414.22x = 40,060,717,111.69
5. Step 5: Solve for x
   x = 40,060,717,111.69/215,414.22
6. Step 6: Final answer
   x = 185,970.62