Finding the Fourth Proportional to 116,421.29, 160,659.46 and 64,736.33

Step by Step Solution

1. Step 1: Write the proportion equation
   116,421.29 : 160,659.46 = 64,736.33 : x
2. Step 2: Convert to fraction form
   116,421.29/160,659.46 = 64,736.33/x
3. Step 3: Cross multiply
   116,421.29x = 160,659.46 × 64,736.33
4. Step 4: Simplify right side
   116,421.29x = 10,400,503,820.18
5. Step 5: Solve for x
   x = 10,400,503,820.18/116,421.29
6. Step 6: Final answer
   x = 89,335.07