Finding the Fourth Proportional to 131,561, 181,554.18 and 71,945

Step by Step Solution

1. Step 1: Write the proportion equation
   131,561 : 181,554.18 = 71,945 : x
2. Step 2: Convert to fraction form
   131,561/181,554.18 = 71,945/x
3. Step 3: Cross multiply
   131,561x = 181,554.18 × 71,945
4. Step 4: Simplify right side
   131,561x = 13,061,915,480.10
5. Step 5: Solve for x
   x = 13,061,915,480.10/131,561
6. Step 6: Final answer
   x = 99,284.10