Finding the Fourth Proportional to 105,385.52, 158,077.42 and 43,012.28

Step by Step Solution

1. Step 1: Write the proportion equation
   105,385.52 : 158,077.42 = 43,012.28 : x
2. Step 2: Convert to fraction form
   105,385.52/158,077.42 = 43,012.28/x
3. Step 3: Cross multiply
   105,385.52x = 158,077.42 × 43,012.28
4. Step 4: Simplify right side
   105,385.52x = 6,799,270,250.72
5. Step 5: Solve for x
   x = 6,799,270,250.72/105,385.52
6. Step 6: Final answer
   x = 64,518.07