Finding the Fourth Proportional to 98,280.72, 147,420.27 and 28,160.10

Step by Step Solution

1. Step 1: Write the proportion equation
   98,280.72 : 147,420.27 = 28,160.10 : x
2. Step 2: Convert to fraction form
   98,280.72/147,420.27 = 28,160.10/x
3. Step 3: Cross multiply
   98,280.72x = 147,420.27 × 28,160.10
4. Step 4: Simplify right side
   98,280.72x = 4,151,369,545.23
5. Step 5: Solve for x
   x = 4,151,369,545.23/98,280.72
6. Step 6: Final answer
   x = 42,239.92