Finding the Fourth Proportional to 92,685.12, 139,050.72 and 30,361.92

Step by Step Solution

1. Step 1: Write the proportion equation
   92,685.12 : 139,050.72 = 30,361.92 : x
2. Step 2: Convert to fraction form
   92,685.12/139,050.72 = 30,361.92/x
3. Step 3: Cross multiply
   92,685.12x = 139,050.72 × 30,361.92
4. Step 4: Simplify right side
   92,685.12x = 4,221,846,836.58
5. Step 5: Solve for x
   x = 4,221,846,836.58/92,685.12
6. Step 6: Final answer
   x = 45,550.43