Finding the Fourth Proportional to 72,927.60, 109,132.20 and 50,636.40

Step by Step Solution

1. Step 1: Write the proportion equation
   72,927.60 : 109,132.20 = 50,636.40 : x
2. Step 2: Convert to fraction form
   72,927.60/109,132.20 = 50,636.40/x
3. Step 3: Cross multiply
   72,927.60x = 109,132.20 × 50,636.40
4. Step 4: Simplify right side
   72,927.60x = 5,526,061,732.08
5. Step 5: Solve for x
   x = 5,526,061,732.08/72,927.60
6. Step 6: Final answer
   x = 75,774.63