Finding the Fourth Proportional to 215,928.56, 297,827.16 and 187,196.86

Step by Step Solution

1. Step 1: Write the proportion equation
   215,928.56 : 297,827.16 = 187,196.86 : x
2. Step 2: Convert to fraction form
   215,928.56/297,827.16 = 187,196.86/x
3. Step 3: Cross multiply
   215,928.56x = 297,827.16 × 187,196.86
4. Step 4: Simplify right side
   215,928.56x = 55,752,309,174.72
5. Step 5: Solve for x
   x = 55,752,309,174.72/215,928.56
6. Step 6: Final answer
   x = 258,197.94