Finding the Fourth Proportional to 131,790.10, 181,870.62 and 71,361.46

Step by Step Solution

1. Step 1: Write the proportion equation
   131,790.10 : 181,870.62 = 71,361.46 : x
2. Step 2: Convert to fraction form
   131,790.10/181,870.62 = 71,361.46/x
3. Step 3: Cross multiply
   131,790.10x = 181,870.62 × 71,361.46
4. Step 4: Simplify right side
   131,790.10x = 12,978,552,974.31
5. Step 5: Solve for x
   x = 12,978,552,974.31/131,790.10
6. Step 6: Final answer
   x = 98,478.97