Finding the Fourth Proportional to 80,819.78, 111,500.62 and 48,977.06

Step by Step Solution

1. Step 1: Write the proportion equation
   80,819.78 : 111,500.62 = 48,977.06 : x
2. Step 2: Convert to fraction form
   80,819.78/111,500.62 = 48,977.06/x
3. Step 3: Cross multiply
   80,819.78x = 111,500.62 × 48,977.06
4. Step 4: Simplify right side
   80,819.78x = 5,460,971,875.83
5. Step 5: Solve for x
   x = 5,460,971,875.83/80,819.78
6. Step 6: Final answer
   x = 67,569.75