Finding the Fourth Proportional to 137,568.01, 189,763.42 and 86,499.89

Step by Step Solution

1. Step 1: Write the proportion equation
   137,568.01 : 189,763.42 = 86,499.89 : x
2. Step 2: Convert to fraction form
   137,568.01/189,763.42 = 86,499.89/x
3. Step 3: Cross multiply
   137,568.01x = 189,763.42 × 86,499.89
4. Step 4: Simplify right side
   137,568.01x = 16,414,514,956.02
5. Step 5: Solve for x
   x = 16,414,514,956.02/137,568.01
6. Step 6: Final answer
   x = 119,319.27