Finding the Fourth Proportional to 64,256.65, 88,663.61 and 40,366.42

Step by Step Solution

1. Step 1: Write the proportion equation
   64,256.65 : 88,663.61 = 40,366.42 : x
2. Step 2: Convert to fraction form
   64,256.65/88,663.61 = 40,366.42/x
3. Step 3: Cross multiply
   64,256.65x = 88,663.61 × 40,366.42
4. Step 4: Simplify right side
   64,256.65x = 3,579,032,399.23
5. Step 5: Solve for x
   x = 3,579,032,399.23/64,256.65
6. Step 6: Final answer
   x = 55,699.02