Finding the Fourth Proportional to 90,530.20, 124,856.31 and 67,919.37

Step by Step Solution

1. Step 1: Write the proportion equation
   90,530.20 : 124,856.31 = 67,919.37 : x
2. Step 2: Convert to fraction form
   90,530.20/124,856.31 = 67,919.37/x
3. Step 3: Cross multiply
   90,530.20x = 124,856.31 × 67,919.37
4. Step 4: Simplify right side
   90,530.20x = 8,480,161,915.72
5. Step 5: Solve for x
   x = 8,480,161,915.72/90,530.20
6. Step 6: Final answer
   x = 93,672.19