Finding the Fourth Proportional to 131,698, 181,744.52 and 72,083.28

Step by Step Solution

1. Step 1: Write the proportion equation
   131,698 : 181,744.52 = 72,083.28 : x
2. Step 2: Convert to fraction form
   131,698/181,744.52 = 72,083.28/x
3. Step 3: Cross multiply
   131,698x = 181,744.52 × 72,083.28
4. Step 4: Simplify right side
   131,698x = 13,100,741,123.63
5. Step 5: Solve for x
   x = 13,100,741,123.63/131,698
6. Step 6: Final answer
   x = 99,475.63