Finding the Fourth Proportional to 72,086.48, 108,129.36 and 19,495.76

Step by Step Solution

1. Step 1: Write the proportion equation
   72,086.48 : 108,129.36 = 19,495.76 : x
2. Step 2: Convert to fraction form
   72,086.48/108,129.36 = 19,495.76/x
3. Step 3: Cross multiply
   72,086.48x = 108,129.36 × 19,495.76
4. Step 4: Simplify right side
   72,086.48x = 2,108,064,051.51
5. Step 5: Solve for x
   x = 2,108,064,051.51/72,086.48
6. Step 6: Final answer
   x = 29,243.54