Finding the Fourth Proportional to 42,615.16, 58,836.32 and 38,131.12

Step by Step Solution

1. Step 1: Write the proportion equation
   42,615.16 : 58,836.32 = 38,131.12 : x
2. Step 2: Convert to fraction form
   42,615.16/58,836.32 = 38,131.12/x
3. Step 3: Cross multiply
   42,615.16x = 58,836.32 × 38,131.12
4. Step 4: Simplify right side
   42,615.16x = 2,243,494,778.28
5. Step 5: Solve for x
   x = 2,243,494,778.28/42,615.16
6. Step 6: Final answer
   x = 52,645.46