Finding the Fourth Proportional to 50,840.46, 76,185.71 and 28,320.10

Step by Step Solution

1. Step 1: Write the proportion equation
   50,840.46 : 76,185.71 = 28,320.10 : x
2. Step 2: Convert to fraction form
   50,840.46/76,185.71 = 28,320.10/x
3. Step 3: Cross multiply
   50,840.46x = 76,185.71 × 28,320.10
4. Step 4: Simplify right side
   50,840.46x = 2,157,586,699.91
5. Step 5: Solve for x
   x = 2,157,586,699.91/50,840.46
6. Step 6: Final answer
   x = 42,438.38