Finding the Fourth Proportional to 98,278.72, 147,417.27 and 28,158.10

Step by Step Solution

1. Step 1: Write the proportion equation
   98,278.72 : 147,417.27 = 28,158.10 : x
2. Step 2: Convert to fraction form
   98,278.72/147,417.27 = 28,158.10/x
3. Step 3: Cross multiply
   98,278.72x = 147,417.27 × 28,158.10
4. Step 4: Simplify right side
   98,278.72x = 4,150,990,230.39
5. Step 5: Solve for x
   x = 4,150,990,230.39/98,278.72
6. Step 6: Final answer
   x = 42,236.92