Finding the Fourth Proportional to 132,014.61, 198,049.05 and 53,128.71

Step by Step Solution

1. Step 1: Write the proportion equation
   132,014.61 : 198,049.05 = 53,128.71 : x
2. Step 2: Convert to fraction form
   132,014.61/198,049.05 = 53,128.71/x
3. Step 3: Cross multiply
   132,014.61x = 198,049.05 × 53,128.71
4. Step 4: Simplify right side
   132,014.61x = 10,522,090,543.23
5. Step 5: Solve for x
   x = 10,522,090,543.23/132,014.61
6. Step 6: Final answer
   x = 79,703.99