Finding the Fourth Proportional to 73,320, 101,181.60 and 39,786

Step by Step Solution

1. Step 1: Write the proportion equation
   73,320 : 101,181.60 = 39,786 : x
2. Step 2: Convert to fraction form
   73,320/101,181.60 = 39,786/x
3. Step 3: Cross multiply
   73,320x = 101,181.60 × 39,786
4. Step 4: Simplify right side
   73,320x = 4,025,611,137.60
5. Step 5: Solve for x
   x = 4,025,611,137.60/73,320
6. Step 6: Final answer
   x = 54,904.68