Finding the Fourth Proportional to 50,824.78, 70,141.89 and 30,686.56

Step by Step Solution

1. Step 1: Write the proportion equation
   50,824.78 : 70,141.89 = 30,686.56 : x
2. Step 2: Convert to fraction form
   50,824.78/70,141.89 = 30,686.56/x
3. Step 3: Cross multiply
   50,824.78x = 70,141.89 × 30,686.56
4. Step 4: Simplify right side
   50,824.78x = 2,152,413,316.00
5. Step 5: Solve for x
   x = 2,152,413,316.00/50,824.78
6. Step 6: Final answer
   x = 42,349.68