Finding the Fourth Proportional to 104,730.72, 157,036.56 and 71,491.02

Step by Step Solution

1. Step 1: Write the proportion equation
   104,730.72 : 157,036.56 = 71,491.02 : x
2. Step 2: Convert to fraction form
   104,730.72/157,036.56 = 71,491.02/x
3. Step 3: Cross multiply
   104,730.72x = 157,036.56 × 71,491.02
4. Step 4: Simplify right side
   104,730.72x = 11,226,703,851.69
5. Step 5: Solve for x
   x = 11,226,703,851.69/104,730.72
6. Step 6: Final answer
   x = 107,195.90