Finding the Fourth Proportional to 72,834, 109,243.68 and 53,151

Step by Step Solution

1. Step 1: Write the proportion equation
   72,834 : 109,243.68 = 53,151 : x
2. Step 2: Convert to fraction form
   72,834/109,243.68 = 53,151/x
3. Step 3: Cross multiply
   72,834x = 109,243.68 × 53,151
4. Step 4: Simplify right side
   72,834x = 5,806,410,835.68
5. Step 5: Solve for x
   x = 5,806,410,835.68/72,834
6. Step 6: Final answer
   x = 79,721.16