Finding the Fourth Proportional to 53,848.70, 80,819.72 and 53,724.16

Step by Step Solution

1. Step 1: Write the proportion equation
   53,848.70 : 80,819.72 = 53,724.16 : x
2. Step 2: Convert to fraction form
   53,848.70/80,819.72 = 53,724.16/x
3. Step 3: Cross multiply
   53,848.70x = 80,819.72 × 53,724.16
4. Step 4: Simplify right side
   53,848.70x = 4,341,970,895.72
5. Step 5: Solve for x
   x = 4,341,970,895.72/53,848.70
6. Step 6: Final answer
   x = 80,632.80