Finding the Fourth Proportional to 151,990.59, 209,740.50 and 84,004.05

Step by Step Solution

1. Step 1: Write the proportion equation
   151,990.59 : 209,740.50 = 84,004.05 : x
2. Step 2: Convert to fraction form
   151,990.59/209,740.50 = 84,004.05/x
3. Step 3: Cross multiply
   151,990.59x = 209,740.50 × 84,004.05
4. Step 4: Simplify right side
   151,990.59x = 17,619,051,449.03
5. Step 5: Solve for x
   x = 17,619,051,449.03/151,990.59
6. Step 6: Final answer
   x = 115,921.99