Finding the Fourth Proportional to 131,809.16, 181,895.72 and 71,378.42

Step by Step Solution

1. Step 1: Write the proportion equation
   131,809.16 : 181,895.72 = 71,378.42 : x
2. Step 2: Convert to fraction form
   131,809.16/181,895.72 = 71,378.42/x
3. Step 3: Cross multiply
   131,809.16x = 181,895.72 × 71,378.42
4. Step 4: Simplify right side
   131,809.16x = 12,983,429,098.36
5. Step 5: Solve for x
   x = 12,983,429,098.36/131,809.16
6. Step 6: Final answer
   x = 98,501.72