Finding the Fourth Proportional to 59,128.81, 88,645.32 and 40,361.58

Step by Step Solution

1. Step 1: Write the proportion equation
   59,128.81 : 88,645.32 = 40,361.58 : x
2. Step 2: Convert to fraction form
   59,128.81/88,645.32 = 40,361.58/x
3. Step 3: Cross multiply
   59,128.81x = 88,645.32 × 40,361.58
4. Step 4: Simplify right side
   59,128.81x = 3,577,865,174.81
5. Step 5: Solve for x
   x = 3,577,865,174.81/59,128.81
6. Step 6: Final answer
   x = 60,509.68