Finding the Fourth Proportional to 116,870.12, 161,285.50 and 65,884.76

Step by Step Solution

1. Step 1: Write the proportion equation
   116,870.12 : 161,285.50 = 65,884.76 : x
2. Step 2: Convert to fraction form
   116,870.12/161,285.50 = 65,884.76/x
3. Step 3: Cross multiply
   116,870.12x = 161,285.50 × 65,884.76
4. Step 4: Simplify right side
   116,870.12x = 10,626,256,458.98
5. Step 5: Solve for x
   x = 10,626,256,458.98/116,870.12
6. Step 6: Final answer
   x = 90,923.64