Finding the Fourth Proportional to 129,818.63, 194,654.89 and 89,339.69

Step by Step Solution

1. Step 1: Write the proportion equation
   129,818.63 : 194,654.89 = 89,339.69 : x
2. Step 2: Convert to fraction form
   129,818.63/194,654.89 = 89,339.69/x
3. Step 3: Cross multiply
   129,818.63x = 194,654.89 × 89,339.69
4. Step 4: Simplify right side
   129,818.63x = 17,390,406,556.31
5. Step 5: Solve for x
   x = 17,390,406,556.31/129,818.63
6. Step 6: Final answer
   x = 133,959.26