Finding the Fourth Proportional to 105,757.09, 158,538.52 and 45,748.09

Step by Step Solution

1. Step 1: Write the proportion equation
   105,757.09 : 158,538.52 = 45,748.09 : x
2. Step 2: Convert to fraction form
   105,757.09/158,538.52 = 45,748.09/x
3. Step 3: Cross multiply
   105,757.09x = 158,538.52 × 45,748.09
4. Step 4: Simplify right side
   105,757.09x = 7,252,834,479.45
5. Step 5: Solve for x
   x = 7,252,834,479.45/105,757.09
6. Step 6: Final answer
   x = 68,580.12