Finding the Fourth Proportional to 101,132.15, 139,571.30 and 55,819.94

Step by Step Solution

1. Step 1: Write the proportion equation
   101,132.15 : 139,571.30 = 55,819.94 : x
2. Step 2: Convert to fraction form
   101,132.15/139,571.30 = 55,819.94/x
3. Step 3: Cross multiply
   101,132.15x = 139,571.30 × 55,819.94
4. Step 4: Simplify right side
   101,132.15x = 7,790,861,033.42
5. Step 5: Solve for x
   x = 7,790,861,033.42/101,132.15
6. Step 6: Final answer
   x = 77,036.45