Finding the Fourth Proportional to 71,947.96, 99,288.72 and 40,118.92

Step by Step Solution

1. Step 1: Write the proportion equation
   71,947.96 : 99,288.72 = 40,118.92 : x
2. Step 2: Convert to fraction form
   71,947.96/99,288.72 = 40,118.92/x
3. Step 3: Cross multiply
   71,947.96x = 99,288.72 × 40,118.92
4. Step 4: Simplify right side
   71,947.96x = 3,983,356,214.58
5. Step 5: Solve for x
   x = 3,983,356,214.58/71,947.96
6. Step 6: Final answer
   x = 55,364.41