Finding the Fourth Proportional to 48,098.72, 72,109.23 and 20,039.91

Step by Step Solution

1. Step 1: Write the proportion equation
   48,098.72 : 72,109.23 = 20,039.91 : x
2. Step 2: Convert to fraction form
   48,098.72/72,109.23 = 20,039.91/x
3. Step 3: Cross multiply
   48,098.72x = 72,109.23 × 20,039.91
4. Step 4: Simplify right side
   48,098.72x = 1,445,062,479.37
5. Step 5: Solve for x
   x = 1,445,062,479.37/48,098.72
6. Step 6: Final answer
   x = 30,043.68