Finding the Fourth Proportional to 85,433.82, 128,108.82 and 49,904.06

Step by Step Solution

1. Step 1: Write the proportion equation
   85,433.82 : 128,108.82 = 49,904.06 : x
2. Step 2: Convert to fraction form
   85,433.82/128,108.82 = 49,904.06/x
3. Step 3: Cross multiply
   85,433.82x = 128,108.82 × 49,904.06
4. Step 4: Simplify right side
   85,433.82x = 6,393,150,239.81
5. Step 5: Solve for x
   x = 6,393,150,239.81/85,433.82
6. Step 6: Final answer
   x = 74,831.61