Finding the Fourth Proportional to 90,300.78, 124,605.60 and 50,013.48

Step by Step Solution

1. Step 1: Write the proportion equation
   90,300.78 : 124,605.60 = 50,013.48 : x
2. Step 2: Convert to fraction form
   90,300.78/124,605.60 = 50,013.48/x
3. Step 3: Cross multiply
   90,300.78x = 124,605.60 × 50,013.48
4. Step 4: Simplify right side
   90,300.78x = 6,231,959,683.49
5. Step 5: Solve for x
   x = 6,231,959,683.49/90,300.78
6. Step 6: Final answer
   x = 69,013.35