Finding the Fourth Proportional to 72,008.29, 108,012.42 and 19,417.76

Step by Step Solution

1. Step 1: Write the proportion equation
   72,008.29 : 108,012.42 = 19,417.76 : x
2. Step 2: Convert to fraction form
   72,008.29/108,012.42 = 19,417.76/x
3. Step 3: Cross multiply
   72,008.29x = 108,012.42 × 19,417.76
4. Step 4: Simplify right side
   72,008.29x = 2,097,359,113.56
5. Step 5: Solve for x
   x = 2,097,359,113.56/72,008.29
6. Step 6: Final answer
   x = 29,126.63