Finding the Fourth Proportional to 98,573.92, 147,856.56 and 28,456.16

Step by Step Solution

1. Step 1: Write the proportion equation
   98,573.92 : 147,856.56 = 28,456.16 : x
2. Step 2: Convert to fraction form
   98,573.92/147,856.56 = 28,456.16/x
3. Step 3: Cross multiply
   98,573.92x = 147,856.56 × 28,456.16
4. Step 4: Simplify right side
   98,573.92x = 4,207,429,928.41
5. Step 5: Solve for x
   x = 4,207,429,928.41/98,573.92
6. Step 6: Final answer
   x = 42,682.99