Finding the Fourth Proportional to 264,228.72, 396,384.42 and 86,695.35

Step by Step Solution

1. Step 1: Write the proportion equation
   264,228.72 : 396,384.42 = 86,695.35 : x
2. Step 2: Convert to fraction form
   264,228.72/396,384.42 = 86,695.35/x
3. Step 3: Cross multiply
   264,228.72x = 396,384.42 × 86,695.35
4. Step 4: Simplify right side
   264,228.72x = 34,364,686,026.45
5. Step 5: Solve for x
   x = 34,364,686,026.45/264,228.72
6. Step 6: Final answer
   x = 130,056.59