Finding the Fourth Proportional to 117,300.05, 161,769.55 and 91,465

Step by Step Solution

1. Step 1: Write the proportion equation
   117,300.05 : 161,769.55 = 91,465 : x
2. Step 2: Convert to fraction form
   117,300.05/161,769.55 = 91,465/x
3. Step 3: Cross multiply
   117,300.05x = 161,769.55 × 91,465
4. Step 4: Simplify right side
   117,300.05x = 14,796,251,890.75
5. Step 5: Solve for x
   x = 14,796,251,890.75/117,300.05
6. Step 6: Final answer
   x = 126,140.20