Finding the Fourth Proportional to 72,144.15, 108,164.99 and 51,892.94

Step by Step Solution

1. Step 1: Write the proportion equation
   72,144.15 : 108,164.99 = 51,892.94 : x
2. Step 2: Convert to fraction form
   72,144.15/108,164.99 = 51,892.94/x
3. Step 3: Cross multiply
   72,144.15x = 108,164.99 × 51,892.94
4. Step 4: Simplify right side
   72,144.15x = 5,612,999,336.17
5. Step 5: Solve for x
   x = 5,612,999,336.17/72,144.15
6. Step 6: Final answer
   x = 77,802.56