Finding the Fourth Proportional to 71,776.70, 99,050.52 and 39,945.32

Step by Step Solution

1. Step 1: Write the proportion equation
   71,776.70 : 99,050.52 = 39,945.32 : x
2. Step 2: Convert to fraction form
   71,776.70/99,050.52 = 39,945.32/x
3. Step 3: Cross multiply
   71,776.70x = 99,050.52 × 39,945.32
4. Step 4: Simplify right side
   71,776.70x = 3,956,604,717.57
5. Step 5: Solve for x
   x = 3,956,604,717.57/71,776.70
6. Step 6: Final answer
   x = 55,123.80