Finding the Fourth Proportional to 85,574.34, 128,254.59 and 41,189.31

Step by Step Solution

1. Step 1: Write the proportion equation
   85,574.34 : 128,254.59 = 41,189.31 : x
2. Step 2: Convert to fraction form
   85,574.34/128,254.59 = 41,189.31/x
3. Step 3: Cross multiply
   85,574.34x = 128,254.59 × 41,189.31
4. Step 4: Simplify right side
   85,574.34x = 5,282,718,066.43
5. Step 5: Solve for x
   x = 5,282,718,066.43/85,574.34
6. Step 6: Final answer
   x = 61,732.50