Finding the Fourth Proportional to 72,613.02, 108,916.56 and 20,021.07

Step by Step Solution

1. Step 1: Write the proportion equation
   72,613.02 : 108,916.56 = 20,021.07 : x
2. Step 2: Convert to fraction form
   72,613.02/108,916.56 = 20,021.07/x
3. Step 3: Cross multiply
   72,613.02x = 108,916.56 × 20,021.07
4. Step 4: Simplify right side
   72,613.02x = 2,180,626,071.92
5. Step 5: Solve for x
   x = 2,180,626,071.92/72,613.02
6. Step 6: Final answer
   x = 30,030.79