Finding the Fourth Proportional to 50,887.50, 70,224.78 and 31,015.50

Step by Step Solution

1. Step 1: Write the proportion equation
   50,887.50 : 70,224.78 = 31,015.50 : x
2. Step 2: Convert to fraction form
   50,887.50/70,224.78 = 31,015.50/x
3. Step 3: Cross multiply
   50,887.50x = 70,224.78 × 31,015.50
4. Step 4: Simplify right side
   50,887.50x = 2,178,056,664.09
5. Step 5: Solve for x
   x = 2,178,056,664.09/50,887.50
6. Step 6: Final answer
   x = 42,801.41