Finding the Fourth Proportional to 265,358.82, 398,061.30 and 85,462.35

Step by Step Solution

1. Step 1: Write the proportion equation
   265,358.82 : 398,061.30 = 85,462.35 : x
2. Step 2: Convert to fraction form
   265,358.82/398,061.30 = 85,462.35/x
3. Step 3: Cross multiply
   265,358.82x = 398,061.30 × 85,462.35
4. Step 4: Simplify right side
   265,358.82x = 34,019,254,142.06
5. Step 5: Solve for x
   x = 34,019,254,142.06/265,358.82
6. Step 6: Final answer
   x = 128,200.96