Finding the Fourth Proportional to 107,111.42, 159,709.51 and 104,168.78

Step by Step Solution

1. Step 1: Write the proportion equation
   107,111.42 : 159,709.51 = 104,168.78 : x
2. Step 2: Convert to fraction form
   107,111.42/159,709.51 = 104,168.78/x
3. Step 3: Cross multiply
   107,111.42x = 159,709.51 × 104,168.78
4. Step 4: Simplify right side
   107,111.42x = 16,636,744,811.10
5. Step 5: Solve for x
   x = 16,636,744,811.10/107,111.42
6. Step 6: Final answer
   x = 155,321.86