Finding the Fourth Proportional to 49,624.61, 68,492.79 and 30,520.80

Step by Step Solution

1. Step 1: Write the proportion equation
   49,624.61 : 68,492.79 = 30,520.80 : x
2. Step 2: Convert to fraction form
   49,624.61/68,492.79 = 30,520.80/x
3. Step 3: Cross multiply
   49,624.61x = 68,492.79 × 30,520.80
4. Step 4: Simplify right side
   49,624.61x = 2,090,454,745.03
5. Step 5: Solve for x
   x = 2,090,454,745.03/49,624.61
6. Step 6: Final answer
   x = 42,125.37