Finding the Fourth Proportional to 49,433.60, 68,221.35 and 30,315.57

Step by Step Solution

1. Step 1: Write the proportion equation
   49,433.60 : 68,221.35 = 30,315.57 : x
2. Step 2: Convert to fraction form
   49,433.60/68,221.35 = 30,315.57/x
3. Step 3: Cross multiply
   49,433.60x = 68,221.35 × 30,315.57
4. Step 4: Simplify right side
   49,433.60x = 2,068,169,111.42
5. Step 5: Solve for x
   x = 2,068,169,111.42/49,433.60
6. Step 6: Final answer
   x = 41,837.32