Finding the Fourth Proportional to 50,748.05, 70,038.86 and 30,615.81

Step by Step Solution

1. Step 1: Write the proportion equation
   50,748.05 : 70,038.86 = 30,615.81 : x
2. Step 2: Convert to fraction form
   50,748.05/70,038.86 = 30,615.81/x
3. Step 3: Cross multiply
   50,748.05x = 70,038.86 × 30,615.81
4. Step 4: Simplify right side
   50,748.05x = 2,144,296,260.78
5. Step 5: Solve for x
   x = 2,144,296,260.78/50,748.05
6. Step 6: Final answer
   x = 42,253.76