Finding the Fourth Proportional to 116,742.60, 161,075.52 and 65,745

Step by Step Solution

1. Step 1: Write the proportion equation
   116,742.60 : 161,075.52 = 65,745 : x
2. Step 2: Convert to fraction form
   116,742.60/161,075.52 = 65,745/x
3. Step 3: Cross multiply
   116,742.60x = 161,075.52 × 65,745
4. Step 4: Simplify right side
   116,742.60x = 10,589,910,062.40
5. Step 5: Solve for x
   x = 10,589,910,062.40/116,742.60
6. Step 6: Final answer
   x = 90,711.62