Finding the Fourth Proportional to 56,185.36, 77,435.53 and 42,540.71

Step by Step Solution

1. Step 1: Write the proportion equation
   56,185.36 : 77,435.53 = 42,540.71 : x
2. Step 2: Convert to fraction form
   56,185.36/77,435.53 = 42,540.71/x
3. Step 3: Cross multiply
   56,185.36x = 77,435.53 × 42,540.71
4. Step 4: Simplify right side
   56,185.36x = 3,294,162,425.43
5. Step 5: Solve for x
   x = 3,294,162,425.43/56,185.36
6. Step 6: Final answer
   x = 58,630.26