Finding the Fourth Proportional to 49,978.72, 74,931.04 and 30,252.61

Step by Step Solution

1. Step 1: Write the proportion equation
   49,978.72 : 74,931.04 = 30,252.61 : x
2. Step 2: Convert to fraction form
   49,978.72/74,931.04 = 30,252.61/x
3. Step 3: Cross multiply
   49,978.72x = 74,931.04 × 30,252.61
4. Step 4: Simplify right side
   49,978.72x = 2,266,859,380.50
5. Step 5: Solve for x
   x = 2,266,859,380.50/49,978.72
6. Step 6: Final answer
   x = 45,356.49