Finding the Fourth Proportional to 131,729.74, 181,787.59 and 71,300.36

Step by Step Solution

1. Step 1: Write the proportion equation
   131,729.74 : 181,787.59 = 71,300.36 : x
2. Step 2: Convert to fraction form
   131,729.74/181,787.59 = 71,300.36/x
3. Step 3: Cross multiply
   131,729.74x = 181,787.59 × 71,300.36
4. Step 4: Simplify right side
   131,729.74x = 12,961,520,610.53
5. Step 5: Solve for x
   x = 12,961,520,610.53/131,729.74
6. Step 6: Final answer
   x = 98,394.79