Finding the Fourth Proportional to 67,690.36, 93,399.42 and 42,525.28

Step by Step Solution

1. Step 1: Write the proportion equation
   67,690.36 : 93,399.42 = 42,525.28 : x
2. Step 2: Convert to fraction form
   67,690.36/93,399.42 = 42,525.28/x
3. Step 3: Cross multiply
   67,690.36x = 93,399.42 × 42,525.28
4. Step 4: Simplify right side
   67,690.36x = 3,971,836,487.34
5. Step 5: Solve for x
   x = 3,971,836,487.34/67,690.36
6. Step 6: Final answer
   x = 58,676.55