Finding the Fourth Proportional to 116,392.16, 160,634.80 and 65,404.96

Step by Step Solution

1. Step 1: Write the proportion equation
   116,392.16 : 160,634.80 = 65,404.96 : x
2. Step 2: Convert to fraction form
   116,392.16/160,634.80 = 65,404.96/x
3. Step 3: Cross multiply
   116,392.16x = 160,634.80 × 65,404.96
4. Step 4: Simplify right side
   116,392.16x = 10,506,312,668.61
5. Step 5: Solve for x
   x = 10,506,312,668.61/116,392.16
6. Step 6: Final answer
   x = 90,266.50