Finding the Fourth Proportional to 71,769.29, 99,178.17 and 53,833.16

Step by Step Solution

1. Step 1: Write the proportion equation
   71,769.29 : 99,178.17 = 53,833.16 : x
2. Step 2: Convert to fraction form
   71,769.29/99,178.17 = 53,833.16/x
3. Step 3: Cross multiply
   71,769.29x = 99,178.17 × 53,833.16
4. Step 4: Simplify right side
   71,769.29x = 5,339,074,085.12
5. Step 5: Solve for x
   x = 5,339,074,085.12/71,769.29
6. Step 6: Final answer
   x = 74,392.18