Finding the Fourth Proportional to 132,025.98, 198,137.34 and 53,140.86

Step by Step Solution

1. Step 1: Write the proportion equation
   132,025.98 : 198,137.34 = 53,140.86 : x
2. Step 2: Convert to fraction form
   132,025.98/198,137.34 = 53,140.86/x
3. Step 3: Cross multiply
   132,025.98x = 198,137.34 × 53,140.86
4. Step 4: Simplify right side
   132,025.98x = 10,529,188,645.71
5. Step 5: Solve for x
   x = 10,529,188,645.71/132,025.98
6. Step 6: Final answer
   x = 79,750.88