Finding the Fourth Proportional to 116,774.04, 161,139 and 65,784

Step by Step Solution

1. Step 1: Write the proportion equation
   116,774.04 : 161,139 = 65,784 : x
2. Step 2: Convert to fraction form
   116,774.04/161,139 = 65,784/x
3. Step 3: Cross multiply
   116,774.04x = 161,139 × 65,784
4. Step 4: Simplify right side
   116,774.04x = 10,600,367,976
5. Step 5: Solve for x
   x = 10,600,367,976/116,774.04
6. Step 6: Final answer
   x = 90,776.75