Finding the Fourth Proportional to 85,400.51, 128,087.59 and 29,227.72

Step by Step Solution

1. Step 1: Write the proportion equation
   85,400.51 : 128,087.59 = 29,227.72 : x
2. Step 2: Convert to fraction form
   85,400.51/128,087.59 = 29,227.72/x
3. Step 3: Cross multiply
   85,400.51x = 128,087.59 × 29,227.72
4. Step 4: Simplify right side
   85,400.51x = 3,743,707,934.83
5. Step 5: Solve for x
   x = 3,743,707,934.83/85,400.51
6. Step 6: Final answer
   x = 43,837.07