Finding the Fourth Proportional to 108,051.84, 148,933.07 and 72,228.78

Step by Step Solution

1. Step 1: Write the proportion equation
   108,051.84 : 148,933.07 = 72,228.78 : x
2. Step 2: Convert to fraction form
   108,051.84/148,933.07 = 72,228.78/x
3. Step 3: Cross multiply
   108,051.84x = 148,933.07 × 72,228.78
4. Step 4: Simplify right side
   108,051.84x = 10,757,254,128.33
5. Step 5: Solve for x
   x = 10,757,254,128.33/108,051.84
6. Step 6: Final answer
   x = 99,556.42