Finding the Fourth Proportional to 132,978.94, 199,505.94 and 54,149.74

Step by Step Solution

1. Step 1: Write the proportion equation
   132,978.94 : 199,505.94 = 54,149.74 : x
2. Step 2: Convert to fraction form
   132,978.94/199,505.94 = 54,149.74/x
3. Step 3: Cross multiply
   132,978.94x = 199,505.94 × 54,149.74
4. Step 4: Simplify right side
   132,978.94x = 10,803,194,779.46
5. Step 5: Solve for x
   x = 10,803,194,779.46/132,978.94
6. Step 6: Final answer
   x = 81,239.89