Finding the Fourth Proportional to 131,019.72, 180,813.62 and 73,677.09

Step by Step Solution

1. Step 1: Write the proportion equation
   131,019.72 : 180,813.62 = 73,677.09 : x
2. Step 2: Convert to fraction form
   131,019.72/180,813.62 = 73,677.09/x
3. Step 3: Cross multiply
   131,019.72x = 180,813.62 × 73,677.09
4. Step 4: Simplify right side
   131,019.72x = 13,321,820,985.58
5. Step 5: Solve for x
   x = 13,321,820,985.58/131,019.72
6. Step 6: Final answer
   x = 101,677.98