Finding the Fourth Proportional to 50,478.88, 69,688.84 and 30,340.72

Step by Step Solution

1. Step 1: Write the proportion equation
   50,478.88 : 69,688.84 = 30,340.72 : x
2. Step 2: Convert to fraction form
   50,478.88/69,688.84 = 30,340.72/x
3. Step 3: Cross multiply
   50,478.88x = 69,688.84 × 30,340.72
4. Step 4: Simplify right side
   50,478.88x = 2,114,409,581.56
5. Step 5: Solve for x
   x = 2,114,409,581.56/50,478.88
6. Step 6: Final answer
   x = 41,887.01