Finding the Fourth Proportional to 50,775.30, 70,047.86 and 30,620.98

Step by Step Solution

1. Step 1: Write the proportion equation
   50,775.30 : 70,047.86 = 30,620.98 : x
2. Step 2: Convert to fraction form
   50,775.30/70,047.86 = 30,620.98/x
3. Step 3: Cross multiply
   50,775.30x = 70,047.86 × 30,620.98
4. Step 4: Simplify right side
   50,775.30x = 2,144,934,120.10
5. Step 5: Solve for x
   x = 2,144,934,120.10/50,775.30
6. Step 6: Final answer
   x = 42,243.65