Finding the Fourth Proportional to 90,314.78, 124,634.39 and 50,031.15

Step by Step Solution

1. Step 1: Write the proportion equation
   90,314.78 : 124,634.39 = 50,031.15 : x
2. Step 2: Convert to fraction form
   90,314.78/124,634.39 = 50,031.15/x
3. Step 3: Cross multiply
   90,314.78x = 124,634.39 × 50,031.15
4. Step 4: Simplify right side
   90,314.78x = 6,235,601,844.78
5. Step 5: Solve for x
   x = 6,235,601,844.78/90,314.78
6. Step 6: Final answer
   x = 69,042.98