Finding the Fourth Proportional to 137,583.10, 189,784.04 and 86,514.83

Step by Step Solution

1. Step 1: Write the proportion equation
   137,583.10 : 189,784.04 = 86,514.83 : x
2. Step 2: Convert to fraction form
   137,583.10/189,784.04 = 86,514.83/x
3. Step 3: Cross multiply
   137,583.10x = 189,784.04 × 86,514.83
4. Step 4: Simplify right side
   137,583.10x = 16,419,132,575.82
5. Step 5: Solve for x
   x = 16,419,132,575.82/137,583.10
6. Step 6: Final answer
   x = 119,339.75