Finding the Fourth Proportional to 131,865.27, 181,973.99 and 71,436.12

Step by Step Solution

1. Step 1: Write the proportion equation
   131,865.27 : 181,973.99 = 71,436.12 : x
2. Step 2: Convert to fraction form
   131,865.27/181,973.99 = 71,436.12/x
3. Step 3: Cross multiply
   131,865.27x = 181,973.99 × 71,436.12
4. Step 4: Simplify right side
   131,865.27x = 12,999,515,429.34
5. Step 5: Solve for x
   x = 12,999,515,429.34/131,865.27
6. Step 6: Final answer
   x = 98,581.80