Finding the Fourth Proportional to 116,419.17, 160,657.02 and 65,440.56

Step by Step Solution

1. Step 1: Write the proportion equation
   116,419.17 : 160,657.02 = 65,440.56 : x
2. Step 2: Convert to fraction form
   116,419.17/160,657.02 = 65,440.56/x
3. Step 3: Cross multiply
   116,419.17x = 160,657.02 × 65,440.56
4. Step 4: Simplify right side
   116,419.17x = 10,513,485,055.50
5. Step 5: Solve for x
   x = 10,513,485,055.50/116,419.17
6. Step 6: Final answer
   x = 90,307.16