Finding the Fourth Proportional to 137,562.69, 189,755.88 and 86,494.49

Step by Step Solution

1. Step 1: Write the proportion equation
   137,562.69 : 189,755.88 = 86,494.49 : x
2. Step 2: Convert to fraction form
   137,562.69/189,755.88 = 86,494.49/x
3. Step 3: Cross multiply
   137,562.69x = 189,755.88 × 86,494.49
4. Step 4: Simplify right side
   137,562.69x = 16,412,837,116.32
5. Step 5: Solve for x
   x = 16,412,837,116.32/137,562.69
6. Step 6: Final answer
   x = 119,311.69