Finding the Fourth Proportional to 119,691.82, 165,174.72 and 65,978.01

Step by Step Solution

1. Step 1: Write the proportion equation
   119,691.82 : 165,174.72 = 65,978.01 : x
2. Step 2: Convert to fraction form
   119,691.82/165,174.72 = 65,978.01/x
3. Step 3: Cross multiply
   119,691.82x = 165,174.72 × 65,978.01
4. Step 4: Simplify right side
   119,691.82x = 10,897,899,327.91
5. Step 5: Solve for x
   x = 10,897,899,327.91/119,691.82
6. Step 6: Final answer
   x = 91,049.66