Finding the Fourth Proportional to 60,240.20, 90,498.83 and 42,511.68

Step by Step Solution

1. Step 1: Write the proportion equation
   60,240.20 : 90,498.83 = 42,511.68 : x
2. Step 2: Convert to fraction form
   60,240.20/90,498.83 = 42,511.68/x
3. Step 3: Cross multiply
   60,240.20x = 90,498.83 × 42,511.68
4. Step 4: Simplify right side
   60,240.20x = 3,847,257,088.78
5. Step 5: Solve for x
   x = 3,847,257,088.78/60,240.20
6. Step 6: Final answer
   x = 63,865.28