Finding the Fourth Proportional to 105,138.80, 157,733.34 and 35,018.72

Step by Step Solution

1. Step 1: Write the proportion equation
   105,138.80 : 157,733.34 = 35,018.72 : x
2. Step 2: Convert to fraction form
   105,138.80/157,733.34 = 35,018.72/x
3. Step 3: Cross multiply
   105,138.80x = 157,733.34 × 35,018.72
4. Step 4: Simplify right side
   105,138.80x = 5,523,619,668.12
5. Step 5: Solve for x
   x = 5,523,619,668.12/105,138.80
6. Step 6: Final answer
   x = 52,536.45