Finding the Fourth Proportional to 64,537.35, 89,061.89 and 35,857.05

Step by Step Solution

1. Step 1: Write the proportion equation
   64,537.35 : 89,061.89 = 35,857.05 : x
2. Step 2: Convert to fraction form
   64,537.35/89,061.89 = 35,857.05/x
3. Step 3: Cross multiply
   64,537.35x = 89,061.89 × 35,857.05
4. Step 4: Simplify right side
   64,537.35x = 3,193,496,642.82
5. Step 5: Solve for x
   x = 3,193,496,642.82/64,537.35
6. Step 6: Final answer
   x = 49,482.92