Finding the Fourth Proportional to 85,449.82, 128,174.74 and 55,892.52

Step by Step Solution

1. Step 1: Write the proportion equation
   85,449.82 : 128,174.74 = 55,892.52 : x
2. Step 2: Convert to fraction form
   85,449.82/128,174.74 = 55,892.52/x
3. Step 3: Cross multiply
   85,449.82x = 128,174.74 × 55,892.52
4. Step 4: Simplify right side
   85,449.82x = 7,164,009,218.94
5. Step 5: Solve for x
   x = 7,164,009,218.94/85,449.82
6. Step 6: Final answer
   x = 83,838.79