Finding the Fourth Proportional to 108,051.47, 148,932.56 and 72,228.41

Step by Step Solution

1. Step 1: Write the proportion equation
   108,051.47 : 148,932.56 = 72,228.41 : x
2. Step 2: Convert to fraction form
   108,051.47/148,932.56 = 72,228.41/x
3. Step 3: Cross multiply
   108,051.47x = 148,932.56 × 72,228.41
4. Step 4: Simplify right side
   108,051.47x = 10,757,160,900.22
5. Step 5: Solve for x
   x = 10,757,160,900.22/108,051.47
6. Step 6: Final answer
   x = 99,555.90